>Does your employer know?
Nope

>Do they care?
If my Boss knew he would probably have something unplesant to say.

>Would they care if they knew?
See above

>Would it be trivial to detect who was connecting from the kind
>of security logs most corporations take?
The Joy of an open University network. Very little is logged, only real anomalies. Lots of researchers using all sorts of software and hardware.
Plus I'm the ITSecurity guy =0p

>Anything else you'd like to share about mudding and work.
I have two flat screen monitors, one has a privacy screen that you have to be looking directly at to see anything other than black. This is of course the one Zmud runs on. I log way more hours as an Imm during the day because if someone walks into my office, or the phone rings its not so big a deal to be AFK. I have however been pk'd more than once out of the corner of my eye, while my boss is standing in my office talking to me, and my hands are clasped on my desk as I fought the urge to type flee;quaf return. Such is the price of mudding from work.