I am seeing this problem for the first time (for me) just now. Not sure why it suddenly reared its ugly head.
Not comfortable with the solution given by the previous poster (because I don't understand it and can't be troubled right now to do so), I instead consulted:
After doing `sudo rmmod ipv6` and restarting Firefox, I notice the problem is gone.
EDIT: I just noticed that I had already done (in the past) "Method 2" in the post linked above... so perhaps there is some new bug somewhere that makes that no longer fully effective? Or maybe my success was just a fluke and the problem will return.
Last edited by mollison (2011-11-01 22:13:43)
Just to let you know, I had the same issue. I had to edit my sysctl.conf file to permanently disable ipv6. BTW I am running Fedora, so this seems to be a generic issue with gnome based applications. All my kde apps run fine.
For me, this problem was caused by PULSE_SERVER pointing to a server that is currently down. Unsetting this variable solved the problem.