AssertionError in hintedhandoff - 1.0.5

We are running a 8 node cassandra cluster running cassandra 1.0.5.
All our CF use leveled compaction. We ran a test where we did a lot
of inserts for 3 days. After that we started to run tests where some
of the reads could ask for information that was inserted a while back.
In this scenario we are seeing this assertion error in HintedHandoff.

ERROR [HintedHandoff:3] 2011-12-05 15:42:04,324
AbstractCassandraDaemon.java (line 133) Fatal exception in thread
Thread[HintedHandoff:3,1,main]
java.lang.RuntimeException: java.lang.RuntimeException:
java.util.concurrent.ExecutionException: java.lang.AssertionError:
originally calculated column size of 470937164 but now it is 470294247
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException:
java.util.concurrent.ExecutionException: java.lang.AssertionError:
originally calculated column size of 470937164 but now it is 470294247
at org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:330)
at org.apache.cassandra.db.HintedHandOffManager.access$100(HintedHandOffManager.java:81)
at org.apache.cassandra.db.HintedHandOffManager$2.runMayThrow(HintedHandOffManager.java:353)
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
... 3 more
Caused by: java.util.concurrent.ExecutionException:
java.lang.AssertionError: originally calculated column size of
470937164 but now it is 470294247
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.java:83)
at org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:326)
... 6 more
Caused by: java.lang.AssertionError: originally calculated column size
of 470937164 but now it is 470294247
at org.apache.cassandra.db.compaction.LazilyCompactedRow.write(LazilyCompactedRow.java:124)
at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:160)
at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:158)
at org.apache.cassandra.db.compaction.CompactionManager$6.call(CompactionManager.java:275)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
... 3 more
ERROR [HintedHandoff:3] 2011-12-05 15:42:04,333
AbstractCassandraDaemon.java (line 133) Fatal exception in thread
Thread[HintedHandoff:3,1,main]
java.lang.RuntimeException: java.lang.RuntimeException:
java.util.concurrent.ExecutionException: java.lang.AssertionError:
originally calculated column size of 470937164 but now it is 470294247
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException:
java.util.concurrent.ExecutionException: java.lang.AssertionError:
originally calculated column size of 470937164 but now it is 470294247
at org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:330)
at org.apache.cassandra.db.HintedHandOffManager.access$100(HintedHandOffManager.java:81)
at org.apache.cassandra.db.HintedHandOffManager$2.runMayThrow(HintedHandOffManager.java:353)
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
... 3 more
Caused by: java.util.concurrent.ExecutionException:
java.lang.AssertionError: originally calculated column size of
470937164 but now it is 470294247
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.java:83)
at org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:326)
... 6 more
Caused by: java.lang.AssertionError: originally calculated column size
of 470937164 but now it is 470294247
at org.apache.cassandra.db.compaction.LazilyCompactedRow.write(LazilyCompactedRow.java:124)
at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:160)
at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:158)
at org.apache.cassandra.db.compaction.CompactionManager$6.call(CompactionManager.java:275)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
... 3 more
ERROR [CompactionExecutor:9931] 2011-12-05 15:42:04,333
AbstractCassandraDaemon.java (line 133) Fatal exception in thread
Thread[CompactionExecutor:9931,1,main]
java.lang.AssertionError: originally calculated column size of
470937164 but now it is 470294247
at org.apache.cassandra.db.compaction.LazilyCompactedRow.write(LazilyCompactedRow.java:124)
at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:160)
at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:158)
at org.apache.cassandra.db.compaction.CompactionManager$6.call(CompactionManager.java:275)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)