Certainly doesn't sound like XML to me - this is what I see:
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\wuredir.cab with dwProvFlags 0x00000080:
WuSetup has finished. Exit code is 0x00000000
Microsoft signed: NA
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\TMPC6B8.tmp with dwProvFlags 0x00000080:
Microsoft signed: NA
WARNING: WinHttp: SendRequestToServerForFileInformation failed with 0x80190194
WARNING: WinHttp: ShouldFileBeDownloaded failed with 0x80190194
WARNING: DownloadFileInternal failed for
http://ds.download.windowsupdate.com/v11/2/windowsupdate/redir/v6-win7sp1-wuredir.cab: error 0x80190194
WARNING: WinHttp: SendRequestToServerForFileInformation failed with 0x80190194
WARNING: WinHttp: ShouldFileBeDownloaded failed with 0x80190194
WARNING: DownloadFileInternal failed for
http://download.microsoft.com/v11/2/windowsupdate/redir/v6-win7sp1-wuredir.cab: error 0x80190194
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\v6-win7sp1-wuredir.cab with dwProvFlags 0x00000080:
Microsoft signed: NA
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\v6-win7sp1-wuredir.cab with dwProvFlags 0x00000080:
Microsoft signed: NA
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\wuredir.cab with dwProvFlags 0x00000080:
Microsoft signed: NA
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\TMP1EED.tmp with dwProvFlags 0x00000080:
Microsoft signed: NA
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\wuredir.cab with dwProvFlags 0x00000080:
Microsoft signed: NA
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\TMP1F1D.tmp with dwProvFlags 0x00000080:
Microsoft signed: NA
Whereas previously (at same apparent point in process):
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\muv4wuredir.cab:
Microsoft signed: Yes
Validating signature for C:\Windows\SoftwareDistribution\WuRedir\9482F4B4-E343-43B6-B170-9A65BC822C77\muv4wuredir.cab:
Microsoft signed: Yes
Validating signature for C:\Windows\SoftwareDistribution\SelfUpdate\wuident.cab:
Microsoft signed: Yes
Validating signature for C:\Windows\SoftwareDistribution\SelfUpdate\wuident.cab:
Microsoft signed: Yes
Validating signature for C:\Windows\SoftwareDistribution\SelfUpdate\wsus3setup.cab:
Microsoft signed: Yes
Validating signature for C:\Windows\SoftwareDistribution\SelfUpdate\wsus3setup.cab:
Microsoft signed: Yes