Stop Windows XP from Cache thumbnail?

Windows XP keeps a thumbnail cache of images on your machine. However, if
these images change frequently, the OS might not always update the
cache file, and thus display the wrong thumbnail. For the same reason,
you might simply want to prevent the OS from creating the cache file
(i.e., thumbs.db) altogether. To stop the OS from maintaining the
cache file, perform the following steps:
1. Start a registry editor (e.g., regedit.exe).
2. Navigate to the
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
registry subkey.
3. Double-click the DisableThumbnailCache value or create this
value of type DWORD if it doesn't exist.
4. Set the value to 1, then click OK.
5. Close the registry editor.
6. Log off and log on for the change to take effect.

Huh!!! Little hard to workout??
simpler way --> Open My Computer --> Tools Menu --> Folder Option --> View Tab -->Advance Setting

Check mark "Do not Cache Thumbnails"

Done!!!

This Trick is useful for low-end pc using XP. Makes it faster.

Source