I have 4 users (family) on my home machine - the other 3 use kde.
Almost every day the machine (3GHz core 2 duo) comes to a crawl
when 2 or more nspluginviewer processes
(presumably started by konqueror) use up all cpu time.
Similar problems have been reported by many since July 2007.
The solution
I just came back here, after 1.5 years, out of curiosity.
So the screen is locked before gdmflexiserver is finished asking questions,
and this is not an issue for the ordinary user?
It had happened to me with both gdm and kdm.
In case the bug is still open and bugs somebody:
My "solution" was to
Switching via gdmflexiserver to another user
(running kde) and later switching back to my desktop
(gnome, metacity) shows the gdmflexiserver dialog still up
and both keyboard and mouse are frozen.
Killing gdmflexiserver and a screen saver
(from another console) frees up the keyboard,
but there is s