I'm still recieving this. I used a distribution from the bigpond file library named "ubuntu dapper drake 6.06 beta i386" I activated all repositories except for the backports, downloaded and installed all updates then installed NetworkManager. I tried gtk-update-icon-cache but it does not fix this issue.
-- nm-applet fails with useless error window https://launchpad.net/bugs/6473 -- universe-bugs mailing list universe-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/universe-bugs