Error in ADFS server

We have 2 ADFS 3.0 server farm & 2 ADFS proxy servers, Recently Token signing & Token decrypting self signed certiifcates are renewed. After the renewal we can able to see many 342 events on both the ADFS servers almost for every 10 mins 

Can someone help me on this error event

Log Name:      AD FS/Admin
Source:        AD FS
Date:          4/8/2015 4:17:24 PM
Event ID:      342
Task Category: None
Level:         Error
Keywords:      AD FS
User:          domainname\username
Computer:      server.domainname.com
Description:
Token validation failed.  

Additional Data 

Token Type: 
http://schemas.microsoft.com/ws/2006/05/identitymodel/tokens/UserName 
%Error message: 
domainname\username-The user name or password is incorrect 

Exception details: 
System.IdentityModel.Tokens.SecurityTokenValidationException: domainname\username ---> System.ComponentModel.Win32Exception: The user name or password is incorrect
   --- End of inner exception stack trace ---
   at Microsoft.IdentityServer.Service.Tokens.MSISWindowsUserNameSecurityTokenHandler.ValidateTokenInternal(SecurityToken token)
   at Microsoft.IdentityServer.Service.Tokens.MSISWindowsUserNameSecurityTokenHandler.ValidateToken(SecurityToken token)

System.ComponentModel.Win32Exception (0x80004005): The user name or password is incorrect