From: Mike N. 

On Mon, 11 Sep 2006 06:02:54 -0400, "Geo"  wrote:

>Told you this was the hammer they were going to use to get W2K users to
>upgrade.
>
>Geo.
>
>--------------------
>  just FYI...
>
>  MS06-049 patch (920958) corrupts NTFS compression files.

More from the net .....
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I finally was able to get a confirmation from Microsoft Support yesterday
afternoon (case: SRZ060911001854)

"We are aware the issue you are experiencing. A corresponding bugcheck
request is currently open, and the develop team is working on this issue.
However, the hotfix for this issue is not ready.

0xDF is the data pattern that NTFS returns when it has problem to decompress
the file (eg. the compression fragments are corrupted and can't be
decompressed). Based on my research, the actual raw data on the disk is not
changed, it shows as 0xDF because the system cannot decompress the file and
display the data correctly. So the corrupt is not permanent.

Further more, the issue only occurs on files which containing Hexadecimal
codes."

Apparently, Microsoft decided not to warn people about this problem - no
comment has been added to KF920958 warning people which system
configurations will cause data loss (who cares if it's not permanent if you
can't use your data for a few months).

--- BBBS/NT v4.01 Flag-5