Neil Hobson has posted an article to msexchange.org that covers in detail the dsaccess process. I learned that you can tell Exchange 2003 to not connect to a GC that is also a PDC. As Neil explains it, the PDC can become overwhelmed at times (password changes).
Key: HKLM\System\CurrentControlSet\Services\MSExchangeDSAccess\Profiles\Default
Value: MinUserDC
Type: REG_DWORD
Teo
