The Perforce integration plug-in for Eclipse seems to have some issues with Eclipse 3.3.x, which just came out a few weeks ago.
I have been using 3.3 since it was released along with the Perforce (most current version) plug-in, which I have been using for quite a while with no issues. After the upgrade, other developers I work with and I have started to have odd crashes. Eclipse would be working fine and then just die. The only things I could see in the log file (workspace/.meta/.log) were related to the perforce plug-in. The worst part was that the workspace became unloadable even when the .lock file was removed.
After fiddling around with it and still having issues. I upgraded to a clean Eclipse 3.3.1 installation with a minimum of extra plug-ins (I tend to accumulate plug-ins). I even shut down unused plug-ins that come with Eclipse (as a side note, this makes Eclipse run faster). I was able to work for about a week before it crashed again.
I found out that if you remove the perforce feature directory and plugins directories (not the top-level, but those specific to perforce) you can gain access to the workspace. From there you can reinstall the plug-in from the update manager and at least use it again until it crashes.
I submitted a bug report to Perforce and they said that they are already on the issue and that a new version with the fix will be coming out before the end of the year… hopefully a little sooner than that, but I know how software cycles can go. :-)
