i have a linksys wrt54gs also but my ihub doesnt work with my sv8000hd for some reason. when it did work, it connected fine with my linksys. have you tried to install the most recent firmware update for the linksys router?
your ip for the router if you didnt know is 192.168.2.1 or 192.168.1.1 (for some reason its different even on the same routers lol) anyway default login is admin and pw is admin. go to the last tab "status" and check the version number at the top of the list "Firmware Version: v1.52.5 build 002, Jan. 9, 2008" the latest firmware is
07/01/2008
Ver.1.52.6
Download 1.66 MB
(Firmware)
Release Notes
http://www.linksysbycisco.com/US/en/...T54GS/download this would be the link for that firmware
looks like i have an update as well! try to update the firmware and see if that helps out at all. anything is possible right?

good luck!