Last night My Linksys WRT54GS had the strangest issue.  All of the wireless systems were getting my full broad band connection speed how ever any of the wired connections were only pulling 1.5-3mb.

I updated my firmware from 1.50.5 to 1.52.2 every thing works fine now.  However I attribute this to the router rebooting itself rather then any thing firmware related.  With a little luck this issue won't come back on the new firmware.

It had to be a strange bug since before the reboot I was speed testing at 1.9mbs and after I received 19mbs. Kind of looks like if forgot to carry a 10 some where.