Do you have Glary Utilities? Did you change the context menu entries?
No, I've never even heard of Glary Utilities. The only non-standard program I've used recently is TweakUI to repair the icon cache (some programs were showing the wrong icons for files), which I need to do occasionally.
You can try repairing your installation. If it fails, uninstall/install again.
The repair option worked, thanks. I probably should have thought of that myself, but I'm so used to programs only having a remove option in add/remove programs that I never think to look for a repair option.
Why don't you use avast as resident?
Because in the past, any time I've used any kind of full-time virus program, I've had problems. Either it ends up interferring with something or it slows things down. I know people who have virus scanners and "internet security" software running all the time and they have tons of problems.
I like to keep my system as "lean" as possible and as such, I don't have much running in the background. Basically all my system loads is my firewall software (Kerio freeware version), GetRight (download accelerator) and the Nvidia prefs for my graphics card. When a program adds itself to the startup, which is just about about everything these days, I immediately go in and disable it. If I didn't, I'd have about 50 icons in the system tray by now (like most people). I don't even have any icons on my Desktop other than "My Computer" and the one for Total Commander. I have shortcuts in the Start menu, I don't need them cluttering up the Desktop, which is almost always covered by a web browser or other program. So after installing a new program, I always delete the Desktop icon that it creates (usually without asking).
I use Firefox and I run Avast at least once a day, at which time it scans the startup and memory (never finds anything) and I use it to scan every executable file I download.