Forum Moderators: phranque
You can try to manually delete stuff from the appropriate directories or using the disk cleanup utility, but if you don't control the machine, you've got no guarantee that your personal details won't go straight into the hands of your employer or sysadmin.
If you're in a quiet office with no-one looking over your shoulder, you could check to see if you can boot of a CD, then you could use a bootable Linux distro for personal surfing: but that means having to reboot each time and it would look pretty suspicious if someone walked in!
Do I sound paranoid?! I'm not, I'm just careful...
If the employer has gone to the trouble to disable properties on your computer is it unreasonable to assume you could get canned for circumventing their efforts?
It would be a shame to get fired for clearing spam out of a hotmail account!
If you need access to the web for your own business reasons but need your day job to pay the bills right now, why not get a Blackberry or Treo and check on your breaks to avoid breaking any company policy or having your web movements tracked?