[newbie] Tar File Error

[Anonymous]

When I tried to tar a tar or gz file, it extracted some of the files,
but also gave me some errors.
The errors are all the same.
Here is an example from my Acrobat Reader 4.0 Extraction
It happens in other program extractions too.
"tar: Ilinxr.install/install: Cannot chown to uid 1436 gid 100:
Operation not permitted"
what kinda of error is this?
Is this supposed to happen?
Thank you.