Hi Thomas! Well, I thought it was a good idea to test the rt patch. Never did that before. Cyclictest output looked great, but then i tried to do some audio recording. I used "chrt 80 arecord ..." to record at 96kHz/16bit stereo from an RME Digi96/PAD. That seemed to work fine on an idle machine. So I put some extra load on the machine. A "make -j 16" kernel compilation locks keyboard and screen within minutes, no matter if X is running or not. The attached part of /var/log/messages shows two of those events - I deleted all but the very first log entries. Hardware: Aopen i915GMm-hfs, RME Digi96/PAD Meinberg PCI32 DCF radio clock, 2GB RAM, Pentium M 1.86 MHz. Software: opensues 11.2 MS 7, kernel 2.6.31-rt10, reiserfs partitions. cu, Knut