Remote desktop was working fine on my XP sp2 w/client 4.9.1
workstation until I installed 4.9.1 SP2.

Now when I try to connect I get this error:
"The connection to the remote computer was broken. This may have been
caused by a network error. Please try connecting to the remote
computer again"

After about 3 tries I get "The client could not establish a connection
to the remote computer" and the event log says,
"The terminal server received large number of incomplete connections.
The system may be under attack."

Uninstalling the client and reverting to 4.9.1 SP1 fixed the problem.

The remote also has zen 4 ir6 installed.
I didn't see anything in the knowledge base that applied.

Any suggestions?