Since I stuck two more PCI cards into my PC, stability problems aroused with my TV card: When the system load raised while watching TV in fullscreen, the system froze randomly. In addition, after resetting my PC, the 150GB Software-RAID-5 array had to resynchronize itself. As I restarted the TV app while the sync was running, the system froze a second time. Resetting again, two of the three RAID-5 partitions had been marked as failed, such that the automatic reassembling at boot time failed - I couldn’t even do the assembling by hand! My whole data was lost!!