[horde] upgrading applications

[Gary]

I started using Horde applications with the release of Horde 5. I've  
done one upgrade since then and I can see there are going to be some  
more upgrades available soon. I'm wondering if there is a specific  
method to use for upgrading applications other than running "pear  
install horde/package_name"?

I tried this on trean, but stopped the process when I saw other  
packages being downloaded (with version numbers I wasn't familiar  
with). I'd hate to mess up my Horde installation buy installing wrong  
package versions accidentally.

=============

downloading trean-1.0.1.tgz ...
Starting to download trean-1.0.1.tgz (555,333 bytes)
................................................................................................................done: 555,333  
bytes
downloading Horde_Core-2.4.3.tgz ...
Starting to download Horde_Core-2.4.3.tgz (1,431,210 bytes)
^C

============

Is "pear install horde/package_name" the correct command to use for upgrades?
I'm running Ubuntu server 12.4 on an intel duel core machine. Horde  
5.0.4 (original install was Horde Webmail package). Should I even try  
to upgrade individual applications?

TIA
Gary