Thanks for the replies. Unfortunately, I've already tried the things suggested (except for buying an 800). The most current version of the firmware is already on my 770 [should I re-install it just for the hell of it?], and re-booting doesn't help. I have the network problem issue even when I've connected to very strong, public WLAN connections. Does anyone have any other suggestions before I list this thing on Craigslist? Thanks for any help you can offer!