Settings are not kept

Hi all, I use Win XP Pro SP3 at work, in a corporate network environment, and my problem is that every time I log on to my account (after logging off of rebooting), I get this message at the top that says "Setting up personalized settings", Browser settings, Outlook settings, etc. Then when I go in IE8, I always get the IE setup screen, as though it's the first time I use it, all my Favorites and the History are lost, everything I disabled before is re-enabled, or vice-versa, and I even have to reinstall the network printers! This happens each time I log on. Very annoying. So now I just lock my PC, but if something were to happen and I have to reboot, I'm screwed. I'm stomped. Has anybody ever encountered this problem? Thanks in advance

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