Goal eclipse:eclipse very slow

In a multiple project, when I run the goal eclipse:eclipse, the plugin spends a lot of time to execute it (=~ 12min)

For each submodule, it blocs on this line:

[INFO] Adding support for WTP version 2.0.

And when I run the goal in debug mode (-X), I see it spends many time in dependencies hierarchie, for exemple:

[DEBUG] org.springframework:spring-context:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-aop:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] aopalliance:aopalliance:jar:1.0:compile (selected for compile)
[DEBUG] org.springframework:spring-asm:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-beans:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-core:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-core:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-beans:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-core:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-expression:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] org.springframework:spring-asm:jar:3.0.5.RELEASE:compile (selected for compile)
[DEBUG] fr.generali.pdo.fondation.fwk:pdo-framework-logs:jar:1.0.14:compile (selected for compile)
[DEBUG] ch.qos.logback:logback-classic:jar:0.9.28:compile (selected for compile)
[DEBUG] ch.qos.logback:logback-core:jar:0.9.28:compile (selected for compile)

In this exemple, the plugin spends 30secondes on the last line.

My maven eclipse configuration is the next:

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<eclipseDownloadSources combine.self="override" />
<downloadSources combine.self="override">true</downloadSources>
<downloadJavadocs combine.self="override">true</downloadJavadocs>
<forceRecheck combine.self="override">false</forceRecheck>
<additionalBuildCommands combine.self="override" />
<additionalProjectnatures combine.self="override" />
<wtpversion combine.self="override">2.0</wtpversion>
<workspace>e:\workspace</workspace> -->
<classpathContainers combine.self="override">
<classpathContainer>org.eclipse.jdt.launching.JRE_CONTAINER</classpathContainer>
</classpathContainers>
</configuration>