I answered another question quite similar to yours at Unable to use internet due to suspected DNS malware. There I told my own story of how one of our users had a similar experience. Though the symptons are not 100% the same as yours, there are enough similarities for you to follow the techniques I used in helping my user.
In addition, I see that your user does not have admin rights so I have to consider the possibility that what is causing your issue might not feature in the "Add or remove programs" list. Probably you'll have to disable an auto-start point. Some auto-start points you don't need admin rights for and are specific to the user: that probably explains why the issue doesn't appear for other local users on that machine.
In which case, you can download and run Sysinternals' Autoruns to disable the startup-point. Autoruns is essentially a souped-up verions of msconfig. Once you're in Autoruns's go straight to the Internet Explorer tab and see if IE is loading up anything unusual. Go ahead and untick any unusual entries and hopefully the problem should be gone.