Can't see that this has been brought up yet which I find suprising.
On my P800 I have around 800 contacts (and it's still very speedy when searching!) I also have lots of botes, tasks etc.
What I'm worried about is losing my phone and somebody having access to all this data (or the wife having a nose) , I can't see there's a password feature when using the phone other than at power on.
I know there's HandySafe for storing personal details but it's a little impracticle and doesn't keep my SMS's from prowing eyes!
Any ideas! seems crazy this feature is not available!