May 27, 2007, 10:41 AM
I currently owned a windows based machine and over the last year I have been experiencing the following problem. I click on a PDF file while browsing in windows and after about 5-10 seconds the contents of the window vanish. The window remains but the contents disappear. I run Panda security software and turned it off which didn't make a difference. The security level seems to be set to a Medium Security setting. I have no idea why this is happening.