1. Boot Mageia
2. Login as a non-privileged KDE user.
3. Start Konsole and list a file using cat.
4. Start firefox and access a web-page out there (http://www.theregister.co.uk)
5. Use the mouse wheel to scroll through the web page.
6. Part-way through scrolling the system hangs. Mouse cursor still moving about, but all else is dead. Can't even switch to the system console via Ctrl-Alt-F1.
7. Pull the power plug and go to bed.

Anybody else seeing such problems? What details should I report on Bugzilla?
FWIW, I have Mandriva 2010.2 dual-booting on the same machine, and that's rock solid.