Mail won't stop fetching, and doesn't find it all

Question

I'm on Mail 2.1. When Mail goes to check my pop account, it will download the first mail or two and then it just keeps the little circle spinning. When I look at the activity viewer, it says "Fetching new mail" "Fetching 15 of 15 <subject of the email>" and the progress bar is the little barber pole guy - not moving. I've literally waited for this all day, just to see if I was being impatient when it would stall for a few minutes, and it still hasn't worked. I know there's mail out there since I can check it with the web interface.
I have checked the forums, and tried all of the following tricks I found (not all at once, but separately), and still no joy:
1. Getting rid of what I thought was the "offending" email with the web mail interface, and in fact, clearing out the entire box, and then sending myself a test message from another email account.
2. Disabling my Rules AND turned off the "Enable Junk Mail Filtering" checkbox in preferences.
3. Removing the "MessageUidsAlreadyDownloaded" and "MessageUidsAlreadyDownloaded2" files.
4. Removing the "Envelope Index" and "Envelope Index-journal" files.
5. Moving the entire ~/Library/Mail folder out onto my desktop and re-importing my mailboxes. (Which, by the way, is a real pain.)
Using the Get Info command, i can see all of the mail up there, however, that only works when I take my account (in Mail's preferences) off of the "Include when automatically checking for new Mail", and it isn't spinning and spinning. If it's spinning, then the Get Info doesn't work, either.
Also, another person on our network here is using Mail and the same POP provider and is having no issues at all (so it must be something on my account or my computer).
Does anyone have any other route for me to take?

Answer 1

Try this to determine the scope of the problem:
1. Go to Apple Menu > System Preferences > Accounts, and create a new user account for testing purposes.
2. Either log out of your main user account or just quit Mail so that it does not interfere with the other user account.
3. Log in as the newly created user and set up Mail anew there.
4. If this is a POP account, go to Mail > Preferences > Accounts > Advanced and disable Remove copy from server after retrieving a message if it’s enabled.
5. Check whether the problem also happens when logged in as another user.
Also, try using a different method to connect to Internet, if possible, or connecting the computer to Internet as directly as possible, i.e. bypassing any routers that might be present, using an ethernet cable instead of wireless, etc., and see whether that makes a difference.
I'd rather get emails on this issue where I'm sure to
get them at my email account that is my alias.
I have no idea what are you talking about here.