Wireless connection dropping out.

I am running a macbook on a wireless connection and it keeps dropping the connection. Have there been any known issues with this? I went into the router and made sure it is 'leasing' out an IP for a week and not something like 30 mins. When the connection drops I try my ipod touch and it works fine. This has just started lately so I am thinking its maybe an update I did from apple maybe? Anyone with any input at all?

Have there been any known issues with this?

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You must be using Leopard...
Google it. You're not alone.

Im still on tiger!

Well, there goes the dramatic emoticon...
Refresh the network and see if someone in the area may be on the same channel.
If you just updated, try repairing permissions. (always a good idea)

I tried repairing permissions...I will see how that does.