I too have problem #1 - but it's a bit weird:

I can log in with no problems from my own computer, and from one at work. Others can also log in from my computer and from my work computer, again with no problem. It works with both firefox and internet explorer.

But when the others try and log in from their computer, they get the "Please complete username and password fields". If they try a second time, they are logged in and all works fine until they close all open browser windows. They get the error with either firefox (1.0.4) or internet explorer (version 6).

All I can think of is that my work computer has a static IP address, as does my home computer (well, the home one is on the same intranet). Actually come to think of it, I'm pretty sure my mate's laptop worked when on my internal network too but now that he's back on a dynamic IP the problem is back.

The problem is the same for both the mod_mambo_smf login module and for the standard mambo login module.

I'm using mambo 4.5.2.3; smf 1.0.5; mambo smf forum 1.3.1.2

I had a browse through the login code but couldn't see any reason why the IP address of the client should make any difference. Anyone got any ideas on this one?