My computer was OK this morning. I am running Windows XP.

When I started it up after coming home from work, all kinds of things were changed:

- The display theme changed from Windows Classic to Windows XP.
- My wallpaper selection is gone.
- The color scheme I carefully crafted is gone.
- My selection of the color of the scrollbars is gone, and it is impossible to change scrollbar color now.
- My desktop color selection was changed, and the color I had before is not on the list of available colors.
- Firefox was no longer my default browser.
- Microsoft installed an update without waiting for me to OK the installation.

I am not sure, the only major update by MS for XP was the SP3. Right click on my computer and check what version of service pack is installed, if it shows Service Pack 3 then that could have caused this.