Eclipse loops endlessly: Invoking 'Maven Project Builder'

Ugh! My Eclipse is stuck in an endless loop:

• No operations to display at this time
• Refreshing Workspace Building
• Workspace. Invoking 'Maven Project Builder' on /MobileWebApp

The building workspace never gets past 58%.

Details:

Google's GWT provides a sample app MobileWebApp. They suggest adding it to Eclipse via File > Import > Checkout Maven projects from SCM.

I followed the instructions in this blog for adding the plugins for m2e, subclipse, and the m2e-subclipse connector.

After installing the plugins, I imported the sample project via File > Import > Checkout Maven projects from SCM and this URL.

The import seemed to complete ok and Eclipse doesn't display any markers. But now I have this endless refreshing and building and have no clue what is causing it or how to fix it.

Versions:

• Eclipse Indigo 3.7
• m2e 1.0.100
• m2e connector for build-helper-maven-plugin 0.14
• Maven SCM handler for Subclipse 0.13
• Subclipse 1.6.18
• Subclipse Client Adapter 1.6.12

Any advice is greatly appreciated.

I was able to resolve this by right clicking on the project and selecting Run As > Maven Clean