I'm using a Linksys WRT54G router. WPA2 with AES encryption.
It's most noticable when I'm using Listen to download podcasts, it'll download about 10-20 MB and then just stop. Eventually I get a network connection error, and the only way to get it working again is to disable Wifi and then re-enable it.
I've searched the internets and I found a link at Moto's site that's about 80 pages long so I didn't really feel like going thru it all. So I thought I'd reach out to the community here to see if anybody else is experiencing this.
By the way, I've tried setting my Droid to a static IP and that didn't seem to fix the problem. And I know it's not my router as my desktop (wired) is constantly seeding BitTorrent connections, and both laptops (wireless my girfriend's and mine) will also stay connected. I've also had a iPod Touch on this network, and countless other laptops connected over the years.
Also, I'm no computer moron, I have a Dell laptop that I've got OSX, Ubuntu, and Windows 7 on, and I work in IT. So it's not user error, or ID10T errors.