For just over a week I've been having four little boxes appear on my desktop on close-down, saying that these programmes are still running and I have to close them individually. They are:

sgtray.exe
Dummy Mixer Callback Window
DVD Launcher
Logitech Desktop Messenger Agent

I've never had this problem before and it's now taking a while to close the computer down. My computer is also running slower although I've given it a good cleanup and it seems to 'twitch' every now and again and I have to repeat my actions. Doesn't sound very technical but it's the only way I can describe it. I had two further windows opening as well as these four, but they seem to have disappeared now.

I'm using Internet Explorer 8 if that helps at all.