Ditto with me as well. Interesting to know why this is happening to some but not all.
Lion already on system. No software that has not been approved for Lion, system is new. Maybe a common issue with those that have older system and upgraded to Lion. Unknown, but worth a discussion.
2 machines with no problems here. I have also noticed that the memory management seems to be a lot better with this release. So far, so good. Let's see if I get kernel panics still.