X server consuming lots of CPU cycles

In the past few days I've noticed that the X server process is consuming 20-80% of the CPU on a regular basis as opposed to a more reasonable once in a blue moon. I haven't updated in about a week and was reluctant to do so until I saw a fix for the libXfont/xfs issues. I don't suppose anyone else is seeing unusually high X server usage recently or is aware of some change that would explain what I'm seeing. FWIW, I am running a A31p Thinkpad with 1G RAM and a 2+Ghz processor. The logs do not seem to show anything out of the ordinary. -pmr