On my Pc (P3 800Mhz, 512Mb) program works correctly, the only problem was: 

1. removed cache device from control panel, OK
2. removed device by XP, OK
3. reconnected device, XP Crash (2 times)

Resolved problem closing the control panel before to remove the drive.

Suggestion:
could be usefull if by controll panel, user could increase or decrease the amount of memory allocate in the drive like XP virtual memory manager. 

Impression:
System works correctly, led on drive always blink and the time to open a program was decrease a little bit.

Bye