Hey, i didn't think ide need to post here so soon after joining, but hey here i am.
This isn't a major problem but every time i startup Firefox, it says 'dlplugin.exe' could not be found, then i click ok, and it loads fine..
Its just quite annoying having an extra screen to confirm .
It sounds like it is an add-on that is no longer available, supported, or fully installed on your system. Go to Tools | Add-ons and check out the add-ons that you have installed. Uninstall the ones that you don't need and any that have problems. Update the ones you want to keep.