Surely, "avoid Radio Shack" would have covered the subject, without the bit on power supplies.

Well, you know - I usually don't have anything 'bad' to say about Radio shack - I buy little bits n pieces there now and again, such as ac/dc adapters (never had issues before) or in a pinch I've bought serial null modem cables, adapters, etc - I dunno - in Canada, Radio Shack is a staple, right up there with Canadian Tire - no complaints about my digital voice recorder I got there either for leaving myself quick vm's about mp3's that need to be re ripped, etc, etc..