I have no idea how this problem occured today. The last thing I remember doing was upgrading some video codec library I think, and now suddenly some of my GUI apps are running, but they are not visible to me. I have since tried downgraded my Debian system, restarting X, trying a different WM, and re-installing offending apps, but to no prevail.
Two apps that I know are exhibiting this behavior right now are: xchat and synaptic.
When I run xchat (either from my FVWM menu or from console) I get the select server list just fine, but the main window doesn't appear! I know it is running though, because xchat is still listed as a running process after I close the select server list, and I can hear people say my name in the channels I have set to auto-join (a beep is emitted each time my name is said).
In the case of synaptic, I get the prompt to enter the root password ok, but after entering that the package window doesn't show! Once again, checking the process list synaptic is still running, but it's like it's invisible!!!
Does anyone have any clue at all what could be causing this? It's a very disrupting situation for me.
This doesn't effect all of the apps (I can still open Firefox to post thank god), which makes it even more mysterious. Thanks for any advice.