This is usually a sign of some sort of infection (adware, virus). Basically it's gotten into your IE settings and is causing it to redirect to some crap site.

1.) Go into Internet Options > Connection > LAN Settings and make sure you have nothing in the proxy field (unless your work is on some filter and needs that)

2.) Internet Options > Advanced > Reset advanced settings and Reset to factory

3.) Some toolbar (if any) could be causing this.

4.) Firefox.