Has anyone else had problems with certain credit cards at Apple Retail stores? I want to become a PowerBook owner as soon as I can. So I go to my nearest Apple Store knowing exactly what I want. I ran the gauntlet of Applecare and other add on sales pitches and got to the checkout finally. The cleck runs my perfectly good card, with a zero balance because I pay it off every month, plenty of "room" on it for my purchase, etc. She swipes it and says she has to call it in. She calls it in and tells me it was denied!!! Won't give me a reason or anything, just asks if I have another card. I ask her why it was declined, and she says she doesn't know (I know she doesn't know, but there's usually a code number or something). At this point the clerk next to her say's "Is it a United Visa". It is. He tells her "We have problems with those". WTH? She just shrugs her shoulders and asks again if I have another card. At this point I just leave. I had already been there for an hour saying no to add-ons, and I expected the whole deal to take about 10 minutes. I hop online and order one through Amazon, will be here Tuesday. Has anyone else had this problem with Apple Stores, or was it just a fluke? If at least one other clerk thinks there's a problem, why don't they do something about it?