I've been getting this for the past 24 hours upon opening the market app:
"A network error has occurred. Retry, or cancel and return to the precious screen."
I've tried rebooting numerous times, removing battery, checking to make sure my credit card is up to date in Google Checkout, and some obscure things where I put in, "*#*#checkin#*#*," from my phone.
Nothing works. Anybody else having this issue?