Scheduler is unstable

Hi have 2 project groups,each contains a single build defintion shell project. The first one use default scheduler ( build a site) the second one in the another group uses 10 minute recurrence schedule. What i see is the scheduler only wake up at the hour and then the first 10 min of hour. basicly i dont see
10 minute schedule waking up every 10 minute

here is the log

jvm 1 | 2007-10-12 12:00:00,016 [defaultScheduler_Worker-6] INFO SchedulesActivator:default - >>>>>>>>>>>>>>>>>>>>> Executing build
job (DEFAULT_SCHEDULE)...
jvm 1 | 2007-10-12 12:00:00,016 [defaultScheduler_Worker-6] INFO Continuum:default - Enqueuing 'IPLocks Site' (Build defini
tion id=21).
jvm 1 | 2007-10-12 12:00:00,016 [pool-1-thread-1] INFO BuildController:default - Initializing build
jvm 1 | 2007-10-12 12:00:00,016 [pool-1-thread-1] INFO BuildController:default - Starting build of IPLocks Site
jvm 1 | 2007-10-12 12:00:00,047 [pool-1-thread-1] INFO BuildController:default - Updating working dir
jvm 1 | 2007-10-12 12:00:00,047 [pool-1-thread-1] INFO BuildController:default - Performing action check-working-directory
jvm 1 | 2007-10-12 12:00:00,047 [pool-1-thread-1] INFO BuildController:default - Performing action update-working-directory-from-
scm
jvm 1 | 2007-10-12 12:00:00,063 [pool-1-thread-1] INFO ContinuumScm:default - Updating project: id: '6', name 'IPLocks Site'.
jvm 1 | 2007-10-12 12:00:00,125 [pool-1-thread-1] INFO ScmManager:default - Executing: cmd.exe /X /C '"svn --non-interactive
update"'
jvm 1 | 2007-10-12 12:00:00,125 [pool-1-thread-1] INFO ScmManager:default - Working directory: C:\dev\continuum\working-dire
ctory\1.1\6
jvm 1 | 2007-10-12 12:00:01,109 [pool-1-thread-1] INFO BuildController:default - Merging SCM results
jvm 1 | 2007-10-12 12:00:01,125 [pool-1-thread-1] INFO BuildController:default - The project was not built because no changes wer
e detected in sources since the last build.
jvm 1 | 2007-10-12 12:00:01,125 [pool-1-thread-1] INFO BuildController:default - No changes, not building
jvm 1 | 2007-10-12 12:10:00,012 [defaultScheduler_Worker-0] INFO SchedulesActivator:default - >>>>>>>>>>>>>>>>>>>>> Executing build
job (Run every 10 Minute)...
jvm 1 | 2007-10-12 12:10:00,012 [defaultScheduler_Worker-0] INFO Continuum:default - Enqueuing 'Sentinel - Continuous Build
' (Build definition id=38).
jvm 1 | 2007-10-12 12:10:00,012 [pool-1-thread-1] INFO BuildController:default - Initializing build
jvm 1 | 2007-10-12 12:10:00,027 [pool-1-thread-1] INFO BuildController:default - Starting build of Sentinel - Continuous Build
jvm 1 | 2007-10-12 12:10:00,043 [pool-1-thread-1] INFO BuildController:default - Updating working dir
jvm 1 | 2007-10-12 12:10:00,043 [pool-1-thread-1] INFO BuildController:default - Performing action check-working-directory
jvm 1 | 2007-10-12 12:10:00,043 [pool-1-thread-1] INFO BuildController:default - Performing action update-working-directory-from-
scm
jvm 1 | 2007-10-12 12:10:00,058 [pool-1-thread-1] INFO ContinuumScm:default - Updating project: id: '22', name 'Sentinel - Con
tinuous Build'.
jvm 1 | 2007-10-12 12:10:00,137 [pool-1-thread-1] INFO ScmManager:default - Executing: cmd.exe /X /C '"svn --non-interactive
update"'
jvm 1 | 2007-10-12 12:10:00,137 [pool-1-thread-1] INFO ScmManager:default - Working directory: C:\dev\continuum\working-dire
ctory\1.1\22
jvm 1 | 2007-10-12 12:10:01,105 [pool-1-thread-1] INFO BuildController:default - Merging SCM results
jvm 1 | 2007-10-12 12:10:01,105 [pool-1-thread-1] INFO BuildController:default - The project was not built because no changes wer
e detected in sources since the last build.
jvm 1 | 2007-10-12 12:10:01,105 [pool-1-thread-1] INFO BuildController:default - No changes, not building
jvm 1 | 2007-10-12 13:00:00,022 [defaultScheduler_Worker-14] INFO SchedulesActivator:default - >>>>>>>>>>>>>>>>>>>>> Executing build
job (DEFAULT_SCHEDULE)...
jvm 1 | 2007-10-12 13:00:00,022 [defaultScheduler_Worker-14] INFO Continuum:default - Enqueuing 'IPLocks Site' (Build defin
ition id=21).
jvm 1 | 2007-10-12 13:00:00,022 [pool-1-thread-1] INFO BuildController:default - Initializing build
jvm 1 | 2007-10-12 13:00:00,022 [pool-1-thread-1] INFO BuildController:default - Starting build of IPLocks Site
jvm 1 | 2007-10-12 13:00:00,038 [pool-1-thread-1] INFO BuildController:default - Updating working dir
jvm 1 | 2007-10-12 13:00:00,038 [pool-1-thread-1] INFO BuildController:default - Performing action check-working-directory
jvm 1 | 2007-10-12 13:00:00,038 [pool-1-thread-1] INFO BuildController:default - Performing action update-working-directory-from-
scm
jvm 1 | 2007-10-12 13:00:00,054 [pool-1-thread-1] INFO ContinuumScm:default - Updating project: id: '6', name 'IPLocks Site'.
jvm 1 | 2007-10-12 13:00:00,116 [pool-1-thread-1] INFO ScmManager:default - Executing: cmd.exe /X /C '"svn --non-interactive
update"'
jvm 1 | 2007-10-12 13:00:00,116 [pool-1-thread-1] INFO ScmManager:default - Working directory: C:\dev\continuum\working-dire
ctory\1.1\6
jvm 1 | 2007-10-12 13:00:01,100 [pool-1-thread-1] INFO BuildController:default - Merging SCM results
jvm 1 | 2007-10-12 13:00:01,116 [pool-1-thread-1] INFO BuildController:default - The project was not built because no changes wer
e detected in sources since the last build.
jvm 1 | 2007-10-12 13:00:01,116 [pool-1-thread-1] INFO BuildController:default - No changes, not building
jvm 1 | 2007-10-12 13:10:00,018 [defaultScheduler_Worker-13] INFO SchedulesActivator:default - >>>>>>>>>>>>>>>>>>>>> Executing build
job (Run every 10 Minute)...
jvm 1 | 2007-10-12 13:10:00,018 [defaultScheduler_Worker-13] INFO Continuum:default - Enqueuing 'Sentinel - Continuous Buil
d' (Build definition id=38).
jvm 1 | 2007-10-12 13:10:00,018 [pool-1-thread-1] INFO BuildController:default - Initializing build
jvm 1 | 2007-10-12 13:10:00,018 [pool-1-thread-1] INFO BuildController:default - Starting build of Sentinel - Continuous Build
jvm 1 | 2007-10-12 13:10:00,034 [pool-1-thread-1] INFO BuildController:default - Updating working dir
jvm 1 | 2007-10-12 13:10:00,034 [pool-1-thread-1] INFO BuildController:default - Performing action check-working-directory
jvm 1 | 2007-10-12 13:10:00,049 [pool-1-thread-1] INFO BuildController:default - Performing action update-working-directory-from-
scm
jvm 1 | 2007-10-12 13:10:00,049 [pool-1-thread-1] INFO ContinuumScm:default - Updating project: id: '22', name 'Sentinel - Con
tinuous Build'.
jvm 1 | 2007-10-12 13:10:00,112 [pool-1-thread-1] INFO ScmManager:default - Executing: cmd.exe /X /C '"svn --non-interactive
update"'
jvm 1 | 2007-10-12 13:10:00,112 [pool-1-thread-1] INFO ScmManager:default - Working directory: C:\dev\continuum\working-dire
ctory\1.1\22
jvm 1 | 2007-10-12 13:10:01,112 [pool-1-thread-1] INFO BuildController:default - Merging SCM results
jvm 1 | 2007-10-12 13:10:01,112 [pool-1-thread-1] INFO BuildController:default - The project was not built because no changes wer
e detected in sources since the last build.
jvm 1 | 2007-10-12 13:10:01,112 [pool-1-thread-1] INFO BuildController:default - No changes, not building
jvm 1 | 2007-10-12 14:00:00,013 [defaultScheduler_Worker-10] INFO SchedulesActivator:default - >>>>>>>>>>>>>>>>>>>>> Executing build
job (DEFAULT_SCHEDULE)...
jvm 1 | 2007-10-12 14:00:00,013 [defaultScheduler_Worker-10] INFO Continuum:default - Enqueuing 'IPLocks Site' (Build defin
ition id=21).
jvm 1 | 2007-10-12 14:00:00,013 [pool-1-thread-1] INFO BuildController:default - Initializing build
jvm 1 | 2007-10-12 14:00:00,013 [pool-1-thread-1] INFO BuildController:default - Starting build of IPLocks Site
jvm 1 | 2007-10-12 14:00:00,029 [pool-1-thread-1] INFO BuildController:default - Updating working dir
jvm 1 | 2007-10-12 14:00:00,029 [pool-1-thread-1] INFO BuildController:default - Performing action check-working-directory
jvm 1 | 2007-10-12 14:00:00,029 [pool-1-thread-1] INFO BuildController:default - Performing action update-working-directory-from-
scm
jvm 1 | 2007-10-12 14:00:00,045 [pool-1-thread-1] INFO ContinuumScm:default - Updating project: id: '6', name 'IPLocks Site'.
jvm 1 | 2007-10-12 14:00:00,107 [pool-1-thread-1] INFO ScmManager:default - Executing: cmd.exe /X /C '"svn --non-interactive
update"'
jvm 1 | 2007-10-12 14:00:00,107 [pool-1-thread-1] INFO ScmManager:default - Working directory: C:\dev\continuum\working-dire
ctory\1.1\6
jvm 1 | 2007-10-12 14:00:01,123 [pool-1-thread-1] INFO BuildController:default - Merging SCM results
jvm 1 | 2007-10-12 14:00:01,123 [pool-1-thread-1] INFO BuildController:default - The project was not built because no changes wer
e detected in sources since the last build.
jvm 1 | 2007-10-12 14:00:01,123 [pool-1-thread-1] INFO BuildController:default - No changes, not building