Ondemand & ICA Connection

Recently added Citrix Metaframe XPa to our terminal servers running
deframe. I want to use the ICA protocol now instead of RDP. When I
launch application from portal I get a "could not login" type message and
the Novell client is displayed and shows the wrong NDS context (or in most
cases it's the context of the previous user). Does anyone know of a way
to fix this? I'm running the 4.9 client on the TS boxes and have LDAP
contextless lookups created and that works just fine when not trying to
connect thru the described connection.