Maybe it's Windows maybe a bug.
I have some machines with German Windows XP SP 1 (can't be upgraded). Lansweeper fails to scan the OS. In AD the OS name, SP and version is ok.
19.02.2010 10:45:05: PC1 OS Die Anfrage ist ungültig.
bei System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode)
bei System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()
bei LansweeperService.MdlWmi.GetWMI(String Querystr, String Table, LS_Computer& mycomputer, String section, SqlConnection& sqlcon)
19.02.2010 10:45:17: PC2 OS Die Anfrage ist ungültig.
bei System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode)
bei System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()
bei LansweeperService.MdlWmi.GetWMI(String Querystr, String Table, LS_Computer& mycomputer, String section, SqlConnection& sqlcon)
Sorry for german errorlog.txt.
Attached output of WMIC /node:pc1 os