I tried to enter russian comments too and I got "operation failed".
As server (just upgraded to 4.1) is in USA and nobody there speak russian i'm sure everything installed on the server have english version. I think they have VSS6.0c.
I tested it on my local machine with english XP and english VSS (6.0d) and SoS Server 4.1 and I got the same error.
The next line is written to SoS log:
25.08.2005 10:19:26 - 1: Invalid access code (bad parameter). (80070459)
And VSS 6.0d works with russian comments with my local database.
I use SoS Client 4.1 and I have russian locale for non-Unicode programs in WinXP's Regional settings.
On the other hand we do not use russian, chinese or hindi in comments
