DivX-movies in slow motion or hick-up

I made a fresh install of Windows XP (Pentium III 700 Mhz, 500 MB ram) and installed DivX pro codec 5.11.
But some .avi movies play in slow motion or like hick-ups.
I had this problem before formating the hard-drive, but the new installation didnt solve the problem.

Any solutions?
 
Thank you for your answers.
I have used GSpot and the result is:
*Movie 1
Codec
4CC:mp43
Name:S-mpeg 4 version 3
Stat: 2 compatible codecs installed:
Microsoft MPEG-4 Video Decompressor
WMVideo Decoder DMO

*Movie 2
Codec
4CC:div3
Name:DivX 3 Low-Motion
Stat: 2 compatible codecs installed:
DivX Decode Filter
DivX Decode Filter

*Movie 3
Codec
4CC:DX50/divx
Name:DivX 5.0
Stat: 2 compatible codecs installed:
DivX Decode Filter
DivX Decode Filter

These 3 movies have the problems I have reported: slow motion and hick-ups.
Can you help me with this?
Thanks in advance for your kindness.
 
Shouldn't matter. If you enable DivX in ffdshow I am pretty sure that it will take over the fourCC whether DivX is installed or not.
 
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