The public JIRA has been spitting unusual (and some incomprehensible) Java error messages at people since this-morning. Sometimes it works and sometimes it doesn't. Rob Lanphier, Linden Lab's open source liaison says that Linden Lab have been working on the problem, but do not know what the cause is.
It seems to be happening less, at present, but there's been no further word that the issue has been isolated and repaired.
