Failed dependancies.

[Joe Zhou <zhou psych utoronto ca>]

Hi,

One of our machines is running RH8 with kernel-2.4.20-20.9.
When I was ugrading to glibc-common-2.3.2-4.80.8.i686.rpm,
I got the following result:

#rpm -Uhv glibc-common-2.3.2-4.80.8.i386.rpm
error: Failed dependencies:
       glibc-common = 2.3.2-4.80.6 is needed by (installed) 
glibc-2.3.2-4.80.6

#rpm -Uhv glibc-common-2.3.2-4.80.6.i386.rpm
Preparing...                ########################################### 
[100%]
       package glibc-common-2.3.2-4.80.6 is already installed


My question is if the glibc-common-2.3.2-4.80.6 is already installed, 
why I still got
the first error ? Anybody can enlight me on this?
Thanks a lot.
Joe Zhou