Snow Leopard Keeps dropping wifi connection

[fraser1980]

I upgraded to snow leopard on my 13" unibody macbook in mid September.

Ever since, I have found my wifi connection drops out randomly. It can sometimes happen every 10 minutes or so, or sometimes every hour or so. I watch videos online quite often via iPlayer and such and it is impossible to get 10 minutes into anything without it being interrupted.

At first, I chalked it down to just a poor connection but it just cut out on me again while my friend is playing a game of FIFA online on the PS3 over the same connection. His game was not interrupted.

Is this a common or known issue. How can I fix this?

(I am using o2 broadband)

Anyone?