I get it.
Your routers is not bad.
It`s resulted from your IE surroundings changing,but seconds later under pure ie6 and xp sys I easely access in.
because I see the notes that the page maybe changed or deleted, It means your IE cant`t find it within current settings
or the note really happened(but how,you know the authority to change the routers is limited and I just find the problem suddenly after long time no using )
So I suggest u should have 2 sys on your disk,the complex one for playing everything, the pure one for emergency.
Current techs of IE is too many to finger out one by one.
remember must the pure one.