Login failed while synchronizing via merge replication

[ShaluGoogle]

I'm getting the following error when I'm doing merge replication. Plz, tell me how can I overcome this problem. I cannot able to start the agent... Plz, someone help me

Login failed for user 'myserver\login name'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: ]

Error :18456,Severity :14,State:11 in the error log...

Atleast any troubleshoot for this? Point me out some ieda... I'm getting stuck with this.. Any solution??

[OraMaster]

Pls find here

http://social.msdn.microsoft.com/forums/en-US/sqlsecurity/thread/f342c54e-b832-4257-af1a-2d8a4c595723/