I'm a new PDA user who just picked up a refurb. M515 from the Palm Factory Store. So far, I'm enjoying using the unit but frankly shocked at all the potential problems I'm reading in this forum. I also discovered a vast array of freeware/shareware for these units, a lot of which sounds interesting and perhaps worth a try. My concern, however, is what's the likelyhood of this software damaging my unit ??? How reputable are these suppliers ??? Is there a screening process prior to the software release or is it "caveat emptor" (buyer beware) ??? Thanks, Bill.