I have a Compaq 5838 (500 Mhz Athlon). I am running RH 6.1 and occasionally the keyboard locks up, and in /var/log/messages it says kernel: pc_keyb: controller jammed (0x35). I tried upgrading to 2.2.14 but it still happens. I dont use windoze often enough to know if the problem occurs there also. However, once after this occured I rebooted in windows and ran Compaqs diagnostics, and it reported no problems.
Two year old bug, oh my. I hope it fixed itself in 7.3 :)
Closing as stale.