Hi Josh,
I recorded a bag file when RVIZ was crashing. However, when I played it again RVIZ does not crash and seems ok.
So, I still did not file a ticket.
Previously I was using Ubuntu 9.10 and because of this, I installed 10.04 to check whether it is a problem of my graphics card (my graphics card is intel, whose state in Linux is not very good, I guess). It didnt resolve the problem; but RVIZ does not crash as frequent as it did.
Any thoughts?