Debian Squeeze on my new (used) T61.
events/1 take 50% cpu for some time every 2 secondes or so.
Seems to be related to Wicd. Doing a “ifconfig eth0 down” solved the problem, but I still don’t know the root cause.
T61 specific problem? Lots of posts on forums about this. Lots of people also “fixed” this by removing the battery for a couple of minutes… Pretty strange.