I'm completely stumped on this one, researched for weeks in forums and Bugzilla and can't find anything even close to this except someone running FC2.
I'm running FC6 on new-ish hardware (see my sig) and having a big problem. KDE apps segfault, other apps crash at random, sometimes X just crashes itself.
Most often, the crashes happen on a GUI event like clicking on a button or hovering the cursor over a link, but it's not necessary; a number of times they'll crash overnight.
Here's what I've done so far:
Ran memtest for 10+ hours, no errors.
Installed (and reinstalled) on both the same and a different partition, no difference.
Tried a different install disk, HTTP install, and local hard drive install, no difference.
Tried a different video card, no difference. Also switched between the Livna drivers, the proprietary nVidia drivers from their site, and the stock nv drivers. None made a difference.
Tried with updates and without, every kernel available for FC6 including 2.6.19-1.2895 in testing, no difference.
Tried completely different distros but that's not an accurate way to do things in this case since this hardware is new enough that many distros aren't ready to run on it yet and may have their own issues with it (in fact ironically enough Fedora is the most stable distro on this rig).
Tried different GUIs (I normally use KDE) and the only difference is that KDE apps don't segfault (that I've seen anyway); other apps (and X) will still crash.
After a reinstall, I've only updated one thing at a time (and sometimes nothing at all)...you guessed it, no difference.
Nothing out of the ordinary shows up in any of the usual logs except a recurring automount error in /var/log/messages:
Jan 16 13:41:53 destroyer automount: create_udp_client: hostname lookup failed: No such process
Jan 16 13:41:53 destroyer automount: create_tcp_client: hostname lookup failed: No such process
Jan 16 13:41:53 destroyer automount: lookup_mount: exports lookup failed for .directory
I've shut down everything unnecessary (bluetooth, IrDA etc) and I can't kill anything else without causing a trainwreck. There are no other operating systems installed on this or any orther disk with the exception of VMWare, which has never been an issue before; according to VMWare, the current 2.6.18...FC6 kernels are officially supported. I also know that others have had problems getting FC6 (or any other distro) to run on this CPU/board, but their problems have been limited to actually getting it to install, recognize IDE/SATA drives etc. I've already gotten around all of that.
If anyone has any ideas or further questions, let 'er rip; I'm all out of ideas on this one. Let me know whatever logs you want to see, whatever snapshots you want, anything. I depend on this machine for school and don't want Firefox or OpenOffice burping on me in the middle of a class or a term paper.
I also have this posted at LinuxQuestions.org so please don't refer me to my own post-