For those who also suffer from the same pain: I never had this problems again as soon as I updated to 1.502 and increases MaxPermGen to 128m.
-- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.