At the risk of double posting...(I put this in another thread but really wanted all to be able to see it)
there is now an updated firmwear available... www.linksys.com/downloads
it is v1.00.09
Determine the current firmware version of the wireless router. .
Log into the router's interface For instructions,
Download the current firmware from the Linksys website:
From your PC, open an Internet web browser and browse to http://www.linksys.com/download
Enter WRT54G-TM/ Linksys WRTU54G-TM in the Model Number input box.
Click the Go button.
In the Device Version Number section of the page, select the appropriate version of your router from the drop-down box (Version 1.1 for WRTU54G-TM / 1.0 for WRT54G-TM).
In the Firmware section of the page, note the version of firmware available for download.
If the router is already running the latest firmware, do not continue with the upgrade process.
If the firmware available on the Linksys support web site is newer than the firmware on the router, click the Firmware link or the diskette icon to download the latest firmware to the computer's hard drive.
In the router's administrative web site, click the Administration tab.
Click the Firmware Upgrade tab
Click the Browse button, locate the downloaded firmware file on your PC's hard drive, highlight the firmware, and click Open.
Click the Upgrade button.
The router will display progress bars as it upgrades the firmware.
When the router is done, it will show a message indicating Upgrade is Successful.
Click the Continue button.
The router will reboot. Wait two minutes. Click the Refresh button on the web browser to update the view of the router's administrative website.
Verify that firmware has been upgraded by clicking on Status tab, as detailed in step 1.