KSP completely freezes X after a while (sometimes a few seconds, sometimes 1-2 hours). When that happens, I can't change TTYs, and basically have to SSH in and issue a restart, since I can kill neither KDM, X nor KSP. I'm on Arch Linux, this happens on both 32 and 64 bit versions, and my graphics card is a HD 7950 and I'm using catalyst beta drivers (13.11 beta 9.4). Here's a traceback: http://pastebin.kde.org/pfgfbjp5o. Any ideas on how I could fix this?