[LAU] Kernel and system setup again..

Hi, I reinstalled my system and now got problems with jack. I'm using a 2.6.31.12 kernel with RT patch. Configured it like my old 2.6.27 RT kernel(which ran fine). Is there anything new I have to keep an eye on? I got xruns using both jack-118 and jack-1.9.5 Options that might be important: PREEMT_RCU ON GROUP CPU SCHEDULER ON SLAB ON CFG IO SCHEDULER TICKLESS SYSTEM OFF HIGH RESOLITION TIMER ON SYMMETRIC MULTI PROCESSING ON HPET TIMER ON PREEMPTION MODE REAL-TIME TIMER 1000HZ CPU FREQUENCY SCALING OFF /etc/security/limits.conf is configured: @audio - rtprio 90 @audio - nice -5 @audio - memlock 50000 Thanks for the help! Christian