Here is a fix for the ALT+TAB problems that many players are having in Battlefield 2142. PLEASE READ INSTRUCTIONS BEFORE DOWNLOADING.
If you have not deleted the intro films, but have problems with alt+tab:
1. Go into C:\Program Files\Electronic Arts\Battlefield 2142\mods\bf2142
2. Erase the folder Movies.
3. Download and install this file.
If you have already deleted the intro films, but have problems with alt+tab:
1. Download and install this file.
BIG THANKS TO battlefield2.filefront.com