I uninstalled IE8 and had the same sub domain access problem. I reinstalled IE8 and was able to access the sub domain 1 time. After I exited the sub domain I have the same access problem as before.

When I enter a sub domain address "http://group.company.com" the address is changed to "http://company.com" and the company site is displayed instead of being directed to the sub domain.

Any help...