Lukas Smith has a quick post today about some of the tension that's come up between to PEAR error handling packages and something he's created to try to help calm things down.
Well there is a lot of back and forth about if PEAR should mandate PEAR_Error or PEAR_Exceptions or neither for new packages. This also relates to the question of PHP5 E_STRICT compliance which PEAR_Error obviously is not.
His quick fix for the problem? Two proxy classes that would make switching between either of the two error handling classes as simple as changing out which proxy you're using.