pdf file problem

Hi All

I have been experiencing displaying any file with pdf format. Any site with a pdf which i want to look at does not come up. I see that adobe acrobat gets activated but after that it is only a blank screen. Due to recent security problems I have just recently installed the Zone alarm pro,F-Secure and Anti Trojan 5. The first 2 are always running in the background and I have the feeling that it's one of these doing it. Any ideas please?

Thank you for your great help.
gorgan

Hi,
Did you try uninstalling and reinstalling Acrobat Reader? Have had the same problem and this helped.

Regards
SatGoblin

Thanks for reply. I'll give it a go at some stage.

gorgan