springsource STS hangs on startup

I'm using springsource STS for developing my grails application. Usually it works fine, but today when I started it up, it hung up completly. I had to force quit, but even restarting brought no further result. I looked into workspace/.meta/.log

!ENTRY com.springsource.sts.ide.ui 4 0 2010-06-16 08:09:04.833
!MESSAGE An unexpected error occurred while retrieving feed content.
!STACK 1
org.eclipse.core.runtime.CoreException: Download of http://springide.org/blog/feed/ failed: Unexpected HTTP response 404
at com.springsource.sts.internal.core.net.HttpClientTransportService.toException(HttpClientTransportService.java:205)
at com.springsource.sts.internal.core.net.HttpClientTransportService.stream(HttpClientTransportService.java:187)
at com.springsource.sts.core.HttpUtil.stream(HttpUtil.java:112)
at com.springsource.sts.internal.ide.ui.editors.AggregateFeedJob.run(AggregateFeedJob.java:76)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
!SUBENTRY 1 com.springsource.sts.core 4 0 2010-06-16 08:09:04.833
!MESSAGE Download of http://springide.org/blog/feed/ failed: Unexpected HTTP response 404

From this I knew that there was a problem loading a feed. Google found this for me

http://forum.springsource.org/showthread.php?t=85770

Somebody with the same problem found a workaround: One of the projects is causing the block, god knows why. Rename this project's folder -> Start STS -> Close STS -> Name folder back -> Start STS -> WORKS AGAIN! *YES*

Hopefully, someone finds a solution for this and for another bug for which I don't have a solution (I get update source failed errors with string index out of bounds exception (-34)).