Welcome to the forums, rhinocompanies.

We've seen that issue reported around various Android device forums, with no remedies other than reconfiguring the pop3 emails (again), rebooting, removing certain rogue emails, etc.

It most often appears to be an ongoing script problem having to do with combinations of certain characters in some emails, even three question marks in a row, or certain Asian language characters. Once the emails with those characters in them are removed, the email client functions normally until they are received again.

Some users report success with 3rd party email clients found in Market. Others, such as myself, have never seen the issue when setting up gmail in the stock email app (not the stock gmail app, which can exhibit other issues such as the "stuck sending" problem that can go on for a long time unless the app is cleared of data and then reconfigured).