Windows credentials failure

Since last two Pocketcloud upgrades , windows computers decline my credentials. Have tried correcting the problem on my phone (Droid-X) by deleting all stored PocketCloud information (on the phone), and verifying RDC setups on the hosts. Manually entering credentials at the windows login screen (via Pocketcloud) does not help. Windows to Windows RDC client connections are successful (credentials are accepted). Hosts are running either Windows 7 Pro, Windows XP Pro, Server 2003 R-2, or Server 2008. Firewalls appear to be correct. Please help!