I'm using IDEA 3.0, Build 666 and keep getting the error that I had to run "cvs login".
I was able to work around this problem by cutting and pasting the value from my .cvspass file into the IDEA file "xxxx_iprdaeaa0f9.cvspass". After doing this, I was able to add and commit files to the CVS repository.
Before the cut and paste effort, I had set my CVS_PASSFILE in the idea.lax file like this:
It didn't seem to work though.