Outlook.pst 'The store was last opened on a different machine'

I've recently seen suspicious activity on my PC running Vista, (winrar did something on its own for a split second) When I viewed recent Outlook activity in Event viewer (I'm running Outlook 07)it says "C:Users\Me\AppData\Local\Microsoft\Outlook\Outlook.pst The store was last opened on a different machine" but I only ever access my email from this machine!!! Is my email security being compromised? Can someone advise please? Many thanks. I've just found three occurrences of memman.vxd apparently a keylogger, using Malwarebytes….also something called trojan.banco.

Hi and welcome to the WTT forums.

Sorry to hear of the problems with your machine.It's possible that you are still infected, so its best for you to have the machine checked out by a specialist malware fighter:
Go here: for directions and follow them carefully
http://forums.whatthetech.com/you_Infected_t106388.html
Regards
paws