Log of sucessful login attempts?
 

Hi,

I recently got a BB Torch (on O2 network) & it's been working great. I've got it password protected but lately I've noticed my phone has been moved, emails no longer marked as not read even though I haven't checled my email for hours.
Now, my flatmate & I do get along but she's a very snoopy person. I think she knows my password, (I tend to have 1 password for most things & we've been friends for years) so she could potentially login to my BB and snoop.

I don't want to cause tension between us by accusing her of snooping if she hasn't though, so I was wondering if there is any way of me seeing the "login history" so I can match it with times when I know she's been home? I know how to see if there have been unsucessful login attempts, but can I see a log of the successful ones? Would it be in the event log?