I've not had the weak signal problems like others have been complaining about but the software stops working every couple of weeks and needs to be reinstalled about ten times before it starts working again, when you check to see if it works between each installation it can take a long time and it's very frustrating.
The most unreliable product I have ever had the misfortune to own.

This is a truly terrible piece of equipment, I never get a good signal with it even when I'm a few feet away from the router. I also have a xbox360 wirless adapter which is as far as away from the router as it could possibly be in my house and it picks up a full signal so it has nothing to do with a bad router. I originally bought this for a student house and it worked ok because the walls were paper thin. As one reviewer has already pointed out, unless you live in a paper house do not buy!!!!

It is a fine product its oviously your router or a faulty adapter, is is great i am upstairs and our router is in the dining room and we get a very good signal.

Excellent product.