I was just reading a BBC article about the financial situation in Europe (here), and there were two instances of teh (instead of the) in the short article:
April output fell 1.9% from teh previous month
Teh request would follow a conference call
I guess they don't use a spell checker!
Mind you, a spell checker can be a real nightmare if you try and type foreign languages. I tried to enter teh tarik ('tea poured from a height') the other day, but my computer changed it to the tarik. And I keep on getting caught out by datang ('come') getting changed to dating.