Locked files (again)

Hi!

I have seen this problem in previous threads but not with the exact same files as this. I am a bit curious and alarmed by this error msg that TDS-3 is giving me. How do I know that someone hasn't put a malicious file in this directory and locked it?

04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\locator.exe for read access, file is locked
04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\magnify.exe for read access, file is locked
04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\migwiz.exe for read access, file is locked
04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\narrator.exe for read access, file is locked
04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\ntkrnlpa.exe for read access, file is locked
04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\ntoskrnl.exe for read access, file is locked
04:09:05 [Locked File] Couldn't open c:\windows\$ntuninstallkb826939$\osk.exe for read access, file is locked

/aLTo