with the increase of reader exploits, id recommend everyone uninstall adober reader regardless of what version you have. use a free alternative if you must
third party readers can potentially be even worse.
Prime example: imbedded flash in adobe reader. If you want to imbed some malicious flash code in a PDF document and open it in adobe reader, adobe reader will prompt you with a little question box that asks you if you want to run the potentially evil code. Foxit will just run it anyways.
my solution: make sure you keep it regularly updated and disable the ability to use flash in the system settings. When's the last time you looked at a pdf that was anything more than a bunch of text and pictures anyways?
Is there a network installable/manageable alternative to Adobe Reader?