I have no extra programs installed and have never used it for the internet; when I went to use it today it just started running slowly, especially when I touch the window icon in the upper left hand corner. I have had it for 4 years. Can it be saved?
Did you try a reset/reboot? It should help if a program has glitched and seems to be off, but is still on in the background using up CPU cycles, happened to be once before..
If that doesn't help, do a hard reset (should be on the manual/dell's support section of their site), but you should backup your contacts/files first as it will delete all files/settings!