Browser had been idle in the task bar for a number of hours. Went to above URL and then later minimized the window. Came back about 1/2 hour later and maximized the window but the bottom-most frame on the page contained a copy of my desktop background rather than the previous content. I attempted to use the same session to file this bug, but I crashed while entering text into the summary field (I think backspace was the killer.)

Reassigning to Eric.

I guess it's not too surprising, but I can't easily reproduce this one. I'll leave my browser running overnight and see if I can reproduce it in the morning.

No such luck. Though I did use a Linux build (VC 5.0 bustage prevented me from using a windows build last night). I'll try with an NT build tonight.

Still can't duplicate. Marking this one worksforme. If you see this happen again in more recent builds, please reopen this bug!

Any theories on why this would happen occasionally?

I can't reproduce based on the desciption given. Marking verified works for me.

Sorry, no theories. I'd attribute it to general instability. Probably in webshell as there haven't been many changes in framesets lately. Issues like this come and go on a daily basis as leaks are cleaned up and stability problems fixed, so this is likely to have been a one or several build problem. Are you still seeing this behaviour in recent builds?