i have checked with Component Checker my current release on my machine Windows 2000 Professional.
The result is that for the program i have installad MDAC 2.8 SP1 ON WINDOWS XP2.
I have a strange situation with some files Version 2.81.1117.0 and other files 2.81.1128.0(these files Component checker said that are unknown)
In regedit i find that my FulliInstallVers=2.81.1128.0.
I'm sure that i have installed only MDAC 2.8 SP1 for my application VB6 that use Oracle ODBC Driver and
Microsoft ActiveX Data Object Library.
Now tha application are very slow and don't work correctly.
Some suggest?
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reinstall, or remove all and then reinstall.

I hope this helps !

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Rick HobbsRETIREDCommented:
It is not unusual for a version to have some supporting files from the previous release.  If you run dxdiag and select the DirectX Files tab you will see what I mean.  Have you checked processor and netowrk utilization?
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