Big-IP V11 disconnects every 5 minutes when connected

Big-IP V11 disconnects every 5 minutes when connected I have checked all possible settings and everything seems fine but this one laptop we get disconnected every 5 minutes

Some log file i can share

48,2014-01-08,11:06:50:149,DIALER,DNSv6 servers, 48,2014-01-08,11:06:50:158,DIALER,Running on medium integrity level 48,2014-01-08,11:06:50:160,DIALER,Running on medium integrity level 1,2014-01-08,11:06:50:160,DIALER,EXCEPTION - invalid a_szIP, yui-proxy 1,2014-01-08,11:06:50:161,DIALER,EXCEPTION caught 48,2014-01-08,11:06:50:161,DIALER,patch with IPatchHostsHelper2 48,2014-01-08,11:06:50:178,DIALER,next result, 0, 0 48,2014-01-08,11:06:50:181,DIALER,finished 48,2014-01-08,11:06:50:181,DIALER,device closed. (code), 1 48,2014-01-08,11:06:50:181,DIALER,exit 48,2014-01-08,11:06:50:182,DIALER,enter 0,2014-01-08,11:06:50:182,DIALER,Perform cleanup 48,2014-01-08,11:06:50:183,DIALER,enter 48,2014-01-08,11:06:50:183,DIALER,exit 2,2014-01-08,11:06:50:183,DIALER,Invalid RAS connection handle, 00000000 48,2014-01-08,11:06:50:183,DIALER,Enter 48,2014-01-08,11:06:50:183,DIALER,enter 48,2014-01-08,11:06:50:183,DIALER,Restoring all routing changes... 48,2014-01-08,11:06:50:183,DIALER,Restoring deleted routes... 48,2014-01-08,11:06:50:184,DIALER,Removing added routes... 48,2014-01-08,11:06:50:184,DIALER,device opened succesfully 48,2014-01-08,11:06:50:184,DIALER,Driver capabilities flags, 63 48,2014-01-08,11:06:50:184,DIALER,Routing table restored 48,2014-01-08,11:06:50:185,DIALER,RegOpenKey(), Software\Microsoft\windows\CurrentVersion\Internet Settings\Connections, 0 48,2014-01-08,11:06:50:185,DIALER,finished 48,2014-01-08,11:06:50:185,DIALER,device closed. (code), 1 48,2014-01-08,11:06:50:185,DIALER,exit 48,2014-01-08,11:06:50:185,DIALER,Exit 48,2014-01-08,11:06:50:185,DIALER,exit