problem with machine certificate check...

Hi Again When I try to logon with me client the machinecert agent rturns with -2 - does this Means that it doesnt recoignices my machine cert or what?

Jan 10 10:12:13 bigip1 notice apd[5827]: 01490113:5: b26548ab: session.user.agent is Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729) Jan 10 10:12:13 bigip1 notice apd[5827]: 01490113:5: b26548ab: session.user.clientip is 195.81.253.32 Jan 10 10:12:13 bigip1 notice apd[5827]: 01490113:5: b26548ab: session.user.display_sessionid is b26548ab Jan 10 10:12:13 bigip1 notice apd[5827]: 01490113:5: b26548ab: session.user.sessionid is b26548ab Jan 10 10:12:13 bigip1 notice apd[5827]: 01490113:5: b26548ab: session.user.starttime is 1389345127 Jan 10 10:12:13 bigip1 notice apd[5827]: 01490113:5: b26548ab: session.windows_check_machinecert.last.result is -2