Pierre has this note on his blog today about the latest PEAR release made today - version 1.4.11.

I just released PEAR-1.4.11 this morning. It fixes a problem affecting upgrades from earlier version when you have an old version of the PEAR Frontend Web installed (earlier than 0.5.0). The only other change is the suppression of a couple of php warnings in the list-all command.

This latest update can be downloaded from the main PEAR package page and a complete list of the updates made is in the Changelog.