Safari keeps turning off plug-ins (macbook pro)

Hey everyone,
I'm not sure what I may have installed, but everytime I close and open Safari I have to re-enable plug-ins in the prefs. So I go into prefs and check the plug-ins box. This isn't a huge issue, but it certainly is annoying. Does anyone know what I may be able to do to fix this?

I have checked the /Library/Internet Plug-ins/ directory, and all files inside are Universal Plug-ins. I'm not sure if there is anywhere else I should look though. I'd also like to mention that Camino and Firefox do not have this issue.

Thanks in advance!

Just in case anyone else runs into this problem I found the fix.

Safari > Block Images and Plugins > Plugins

This should fix you up. Not sure why this setting was turned on for me, but turning it off fixed my problem.