When I viewed recent email activity using event viewer (I'm running Outlook 07)it says '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.

It could very well be.

I would recommend running a Malware scan incase you have a keylogger as well as change your password so if in fact someone did have your account information you could change it.

Hope this helps.

Mophead

Aren't you accessing your emails via a handheld device too?