Yes, and we've looked into that as well. We've tried multiple routers (we returned 2 prior to this one, thinking it was the routers at fault), and in each case the problem was always the same: iPad and MBP. Both of these have cases that can be searched for online, and lots of other people have these problems. For the MBP, it had something to do with Snow Leopard, as downgrading seems to help somewhat. For the iPad, their are other reports of it being a energy saving issue. We don't have issues with the iPhone 3GS, iPhone4, or the iMac when it's on the wireless.
We also considered the location of the router, but both the iPad and MBP suffer the problem even if they are in the same room as the router.
We also don't experience the problem on a netbook we have that runs both Linux and Win7. However, we don't use it that often, but it's never had the problem whenever we did use it.
It could simply be a hardware issue, but as I said, we aren't the only ones having this problem.
We also considered the location of the router, but both the iPad and MBP suffer the problem even if they are in the same room as the router.
We also don't experience the problem on a netbook we have that runs both Linux and Win7. However, we don't use it that often, but it's never had the problem whenever we did use it.
It could simply be a hardware issue, but as I said, we aren't the only ones having this problem.