[Lilux-help] kubuntu edgy, kio_thumbnail resource use

Hi, shortly after (K)ubuntu Edgy Eft came out, I installed it on my brand-new PC (32bit Version, so as to be able to use flash and w32codecs without going through chroot). Now, I've had the surprise at least three times that the machine would just suddenly start accessing the disk a lot, and essentially freeze - for a good while. Just earlier tonight this happened again, while I had "top" running, as well as the superkaramba theme "aio". Thanks to these two, I got to see how "kio_thumbnail" simply gobbled up resources (CPU, RAM and swap maxing out - we're talking Athlon X2 4600+ with 1GB RAM and 1GB swap) in no time at all, no chance to even get a shell to kill the process. I was using konqueror as filemanager at the time, but not in any directory with lots of files. I googled a bit, but didn't find much interesting info on this issue. Is anyone aware of specific problems with kio_thumbnail? TIA, Eric