This appears to be the same issue that I am having. I regularly change xterm sizes via key mappings in fvwm. I'm loosing xterms to segv right and left. I request that this gets bumped up to important or higher. At the rate it's going for me I'm going to be switching terminal emulators this afternoon... I've got a lot going on today but I'm happy to help if I can. Thanks! >>>------>