Hi
From the SEE Server IIS log when I attempt to connect:
2012-04-11 17:43:50 W3SVC1118681577 10.0.2.150 POST /GECommunicationWS.asmx - 81 - 10.0.80.128 Mozilla/4.0+(compatible;+MSIE+6.0;+MS+Web+Services+Client+Protocol+2.0.50727.3625) 401 2 2148074254
2012-04-11 17:44:08 W3SVC1118681577 10.0.2.150 POST /GECommunicationWS.asmx - 81 simon.com\geapp 10.0.80.128 Mozilla/4.0+(compatible;+MSIE+6.0;+MS+Web+Services+Client+Protocol+2.0.50727.3625) 200 0 02
As for your question on which client, I can't answer that just yet. I believe they might all be 8.2.0 (_not_ MP2) though.