I first noticed it when trying to retrieve my yahoo e-mail. Upgrading to the newer yahoo mail interface solved the problem. Now it's interfering with youtube and other video sites. I uninstalled the flash player, and the shockwave player, then reinstalled both. No dice. Tried this maybe a dozen times. I read the threads on this problem on a number of forums, and checked all my security, privacy, and java settings. Everything looks right. Ran malware checks (MBAM and SAS) and it checks out clean. Even tried reinstalling quicktime as one comment in some thread suggested this seemed to work in some mysterious way (well, it didn't work for me.)
Adobe is of course totally useless for direct customer support. I've been through their troubleshooting pages over and over and have tried everything they suggest to no avail.
I'm currently running IE7 with XP. It's my mom's computer; I'm visiting and using her rig, and really don't want to upset/change anything significant, so switching to another browser is really not an option. I've been avoiding updating to IE8 on this computer because it's been fine all along but that's probably the most radical I can get if I really really had to.