404 on default controller

[eluser]sophistry[/eluser]
a few things...

do you have .htaccess set up? what does it look like?
what are your routes? what order are they in?
do you have a dir at your webroot called main or Main?
when you say the last example "works" what does that mean? are you sure it is calling the controller you want?

EDIT: whohoo! reached 500 posts.