Help using --exclude

[Scott Sewall]

I'm running rsync v2.5.5 on FreeBSD 4.6.2-RELEASE.

I'm using rsync to mirror the home directories of user's desktop 
machines.  I would like to
exclude the cache of browsers such as mozilla or netscape. 
 Unfortunately I have not been
able to find the right syntax for the --exclude option. I hope someone 
can give me some
insight.

The command I'm using is:
rsync --archive --cvs-exclude --exclude=.mozilla/**/Cache/  --exclude 
*.core --numeric-ids --relative --verbose /export/home/erin 
isengard::shadowfax

An example of a file that I would like to exlcude is:

/export/home/erin/.mozilla/default/4lizkxa3.slt/Cache/00FBBBF2d01

My hope was the exclude pattern .mozilla/**/Cache/ would prevent the 
Cache directory and
all files within it from being copied. However, this is not the case and 
all files in the directory
are being transfered.

You're help is greatly appreciated.

-- Scott