Quartus 8.1 graphics problems

I too have this problem. I've tried the other two suggestions (memory and graphics resources) witch did not help. Some times rebooting helps get another window to display, but never more than three and often only one.

I do have one work-around -- when I run Quartus on a Linux server and X-Win into the server from my desk all works fine (files which did not open, open)

update: I've found that a startup script was enabling 3g support. After I disabled this I was able to open at least 5 screens -- so far without any problems. Though I can use Quartus this way, I would hope Altera fixes this problem.