Comment 24 for bug 257483

(From update of attachment 397329)
I see this frequently enough. Requesting approval1.9.2.

Usually I just try again and then it succeeds, but sometimes when opening some
links from KDE applications the failure is repeated; I give up, open a new
window and try again. What's happening is that KDE is putting up a progress
window while determining the mime type, and the remoting process takes long
enough (bug 222051) that there's are reasonable period of time in which the
process can get caught by KDE's window getting destroyed.

Automated testing is difficult, possibly involving X server emulators or
proxies. I tested the patch by adding sleep()s to the code and manually
destroying windows.

I've submitted bug 517133 for a way on getting stats on how often these errors
are happening.