Something about Entry D was bugging me; it just seemed like too much of a good thing. So I went to see if WOTC had dropped any errata on it.
http://www.wizards.com/default.asp?x=dnd/errata
Page 165: Mindfeeder Weapon Quality
The second sentence should be changed as follows:
Once per day, a mindfeeder weapon grants its wielder
temporary power points equal to the total lethal damage
dealt by a successful critical hit. The wielder must
decide to use the mindfeeder ability after successfully
confirming a critical hit, but prior to rolling critical hit
damage.
Add the following sentence after the third sentence:
The wielder may not exceed his natural maximum
power points per day using the mindfeeder ability.
Based on the errata I really don’t think this exploit will work anymore. The PC won’t even be able to recharge as the Temporary Power Points only last 10 min. Does anyone have any other errata that counter act this?