OpenOffice sometimes reeeeallyyyyy slooooooow?

I remember someone posting to the mailing list a while back about a problem with OpenOffice being really sluggish, something about a kernel conflict. I didn't think much of it at the time, as I wasn't having trouble with OpenOffice... but I've just experienced the second period of extreme lag with the program. (The first I cleared up with a reboot, but that's the Windows Way of solving problems...) Anybody remember this problem and know a solution?