ACDSee 3.10 image viewer, possibly the best image viewer ever made when all you want is to view images. Much faster than its later versions and more stable than other 3.x versions of ACDSee. Also noticably faster than for instance the popular freeware IrFanView image viewer. Tested under Vista 32 and 64bit without problems.

Quick install instructions.
1. Scan files for viruses. Even if I know that there aren't any viruses here you should always scan everything you download. I highly recommend Kaspersky over Norton/Symantec. Avast and AVG have decent free editions.
2. Install the program.
3. Run the patcher and direct it to the file acdsee.exe in the folder where you chose to install it, usually "C:\Program Files\ACD Systems\ACDSee".
4. Start using the program. Whenever ADCSee In Touch online asks you about participating just state that you do not agree and it will not bother you again.
5. (TIP)If you direct the database to some directory that you later remove, or specify a non existant location in the ACDSee registry settings (regedit) the database will never actually store any files on your system. Thumbnails will regenerate every time if you use them.