My miab (about 15 users) has been running perfectly for about 4 or 5 months, but suddenly has started having problems. When I SSH in and do
top I see many sa-learn processes (about 10–15 of them) using almost 100% of the CPU between them. The whole machine is of course very unresponsive due to this; emails are not being delivered etc
Can anyone suggest why this might be happening, and what I can do to debug it and/or rectify it?