ja ik heb het ook gehad en hier is hoe je het verwijderd.
Uninstalling Internet Explorer 7 Beta 2 Preview
To uninstall Internet Explorer 7 Beta 2 Preview and return to Internet Explorer 6 on Windows XP
Click “Start,” and then click “Control Panel.”
Click “Add or Remove Programs.”
Check “Show Updates” at the top of the dialog box.
Scroll down the list to “Windows XP – Software Updates,” select “Internet Explorer 7 Beta 2Preview,” and then click "Change/Remove."
If "Internet Explorer 7 Beta 2 Preview" does not exist, run %windir%\$NtUninstallie7bet2p$\spuninst\spuninst.exe. You need to have "view hidden folders" enabled.
Installation Errors
If you receive notification that the installation failed you should reboot your system to ensure that any changes made during setup are completely undone.
For more information on the problem, you can refer to the log files at:
%windir%\ie7beta2_main.log
%windir%\ie7bet2p.log
%windir%\ie7bet2pUninst.log
where %windir% is the location of your Windows directory, which can usually be found at C:\Windows.
If you receive the error "Setup was unable to open the log file for writing: C:\WINDOWS\ie7beta2_main.log", log in with a user account with administrator privileges and re-run IE 7 setup.
Uninstalling Internet Explorer 6 updates
Updates associated with Internet Explorer 6 will remain in Add/Remove Programs after Internet Explorer 7 is installed. If these updates are removed, your system will likely become unstable or unusable. Uninstalling Internet Explorer 7 should return the system to a working state.
Hier is de link
http://msdn.microsoft.com/ie/releasenotes/default.aspx
sterkte iedereen!