Command+Delete Stopped Working

Okay, I just discovered something else that's interesting. Using the keyboard viewer I discovered that my delete key is now a backspace key and if I hold down the "fn" button it becomes a delete key (forward erase) again. Sure enough if I use the combination fn+delete it works as the shortcut to move a file to the trash.

I'm glad I figured this out, but can anyone tell me how the heck I changed this shortcut or how to change it back?

Just tried logging in as a different user. Same problem with the keyboard. I've also noticed that command+delete erases everything from the cursor back to the beginning of the line in certain applications like Note or Text, but not here in this message box. The mystery continues!

Even more mystery, I noticed that several bookmarks are missing from Safari. Also, when I logged into gmail this morning Safari tried to use a keychain to automatically enter my password. Strange because I never set it up to do that.

The only thing I can think of that may have triggered this is that yesterday morning while typing in some flash cards I was trying to use the shortcut to enter the section sign, which looks like this §. I thought I remembered the shortcut, (command+option+6) but it didn't work and I tried a few variations of command, option, control and various number keys.

Could I have somehow hit some combination of keys that precipitated all these changes? I wouldn't have thought that would be possible. Interestingly I still can't use the shortcut for the section sign. I can see it on the keyboard viewer, it shows up when I hit command+option, but then when I try to use it nothing happens. Just more mystery. I'm hoping that I don't find more problems as time goes on...

Yes, I have tried rebooting.

Gameslover,

You nailed it! Yup, I am using Xtrafinder and this morning when I turned on the computer they had another update. Installed it and everything is back to normal. Thanks for your help!