I'm having the same problem -- I downloaded two files successfully after I first installed LW, but I lost the connection and ever since I've only gotten constant Requery messages.

I'm on a Powerbook G4 OS X (jaguar 10.2.3) with a DSL connection (this computer is receiving it via a wireless router).

Any suggestions would be welcome -- from perusing the forums, this doesn't seem to be an uncommon complaint.