Logged into CO.com.
Checked in for tomorrows flight and after I printed my BPs, I clicked print receipt. At the next screen it Thanked me for Checking In at CO.com and presented me with two buttons (print receipt and reprint BPs). I clicked the "My Account" link in the upper right corner to return to My Account. It gave me the account login screen but even with the correct login it resends you back to that same screen.

I tried both netscape 7.2 and IE 6 using WIN2K.

Cheers,
Eric