Enabled and configured as shown, it will wipe your sensitive personal information whenever you holster the device, or after 5 minutes of inactivity. It's a security feature.
Memory Cleaning
Clean When Holstered: Yes
Clean When Idle: Yes
Idle Timeout: 5 min
Show Icon on Home Screen: No
Registered Cleaners
Address Book Cache
Certificate Search
Certificate Status Manager
Clipboard
Content Protection Cache
Encrypted Messages
Key Store
PGP Key Search
OK, kinda stupid follow-up, but the "cache" it cleans (in address book for example) is not the actual entries, right? It's just like some area with table scraps that are trash anyway...?