Mac OS X 10.8 Mountain Lion : LoginWindow error

[anand.elumalai]

hi all, I am new to Mac OS X..i found some strange error statements in system logs in iMac having Mac OS X 10.8....Could anyone please tell me what is this and way to get out of this error..?
Please find the error statements below...

Oct 16 15:43:47 Sivavikneshs-iMac SecurityAgent[447]: Login Window login proceeding
Oct 16 15:43:47 --- last message repeated 1 time ---
Oct 16 15:43:47 Sivavikneshs-iMac com.apple.launchd[1]: System: com.apple.xpc.domain.authorizationho[448]: Failed to import service at index: 0: 17: File exists
Oct 16 15:43:47 Sivavikneshs-iMac com.apple.SecurityServer[13]: Succeeded authorizing right 'system.login.console' by client '/System/Library/CoreServices/loginwindow.app' [317] for authorization created by '/System/Library/CoreServices/loginwindow.app' [317] (1048579,0)
Oct 16 15:43:47 Sivavikneshs-iMac WindowServer[82]: Session 256 is switching to console
Oct 16 15:43:47 Sivavikneshs-iMac WindowServer[82]: Session 256 retained (2 references)
Oct 16 15:43:47 Sivavikneshs-iMac WindowServer[82]: Session 257 released (1 references)
Oct 16 15:43:48 Sivavikneshs-iMac loginwindow[39]: ERROR | -[LoginDServer setSCDynamicStoreConsoleInformation:uid:gid:sessionList:] | setSCDynamicStoreConsoleInformation failed, result = 22
Oct 16 15:43:48 Sivavikneshs-iMac loginwindow[39]: ERROR | -[LoginDServer setSessionAuthenticatedFlag] | SASetSessionAuthenticatedFlag failed, result = 22
Oct 16 15:43:48 Sivavikneshs-iMac universalaccessd[450]: result=0 err=0 serverVersion=10600000 ( clientSide version=499 ) deathPort=5891 errorStrAddr=0 len=0
Oct 16 15:43:48 Sivavikneshs-iMac universalaccessd[453]: result=0 err=0 serverVersion=10600000 ( clientSide version=499 ) deathPort=5891 errorStrAddr=0 len=0
Oct 16 15:43:49 Sivavikneshs-iMac WindowServer[82]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.