Hi, I switched our main server from rh9 to sl4 and I now have some severe performance problems. Whenever spamassassin runs the whole system gets unusable. Using top shows a load of 5, however, there is no process using cpu time, spamd is in an uninterruptible sleep (D+) and the only visible percentage in the Cpu(s) line of top is a value between 60-90% for "wa" (what is "wa" btw?). I tried to turn HT off and boot the up kernel, but to no avail. Any ideas our suggestins? Thanks, Gerald