same here. all solutions mentioned didn't run despite many patches were
updated and installed related to linux restricted and fglrx through the
update installer.
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[fglrx] freezes upon Logout or Switch user [patch]
https://bugs.launchpad.net/bugs/118605
You received this bug notification because
on 8.04, with ati catalyst8.5 radeon3650 card.
system still freezes (keyboard not responding
- disabling compiz has no effect
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log out or switch user results in crash
https://bugs.launchpad.net/bugs/107115
You received this bug notification because you are a member of Ubuntu
Bugs, which is subs