I'm using the Firmware version DD-WRT v23 SP2 (09/15/06) micro, on a WRT54G v5. Apparently using Internet Explorer I've got no troubles. It's even more stable than with the SP1 I used before. Only I cannot save. Whenether I push the "Save settings" button, or the Connect button, In Internet Explorer a scroll-bar warns me to wait for rebooting, and after a while my router reconnects, with Firefox I see only a blank screen, nothing is saved, my connection hangs. I followed closely all the upgrade passages, even "cleaning" all settings and reinserting then manually. Still, Firefox is unusable. Plus, every time I save something, with IE, my router reboots, but I think is quite normal. Only, I can get if it's my Firefox (both of them, I tried even with the one on my old laptop), or there's something on the firmware that let's me use only IE.