It seems like RDesktop doesn't support logging into a server with no password via the command line. 

This command should work:

/usr/local/bin/rdesktop -u jdoe -p "" win01

but doesn't.  It sits at the Windows prompt waiting for you to click "OK" and then lets you in.

Does anyone know of a workaround/patch for this?

Dave Richards
City of Largo, Florida.