Clients disconnect from CXMD, Cognos Express 10.2.1.3

[BlackHammer]

Hi, ;D ;)
We have a problem that randomly clients (while working in Excel 2010) are disconnected from TM1 server with the following error message:
"Error -2 occurred pinging your cognos passport. You will now be disconnected from cxmd"  >:( :o

We have modified the setting for ClientPingCAMPassport in the tm1s.cfg file from 900 to 110, restarted the services but this seems to have no effect on the problem. :-\ :'(

Installed version: Cognos Express 10.2.1.3

Any help or assistance with the problem will be appreciated. ;D ;)

;D ;D ;D ;D regards,