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This has happened several times with the JavaSE (+ C/C++) nightly from 20080204. I'll be typing along (in a Java source file) and start getting these exceptions. I'm making it a P1 because once I start getting them, they never go away and I'm pretty much through getting work done in that file. Its serious enough that I'll be switching back to NB 6.0 FCS for awhile.
Created attachment 56109 [details] stack trace
*** This issue has been marked as a duplicate of 126727 ***