Someone is DEFINITELY messing with it -- nobody buys exactly $45 in Starbucks: http://twitter.com/#!/jonathanscard/status/10035604975584460...

you never know -- multiple purchases could've added up to $45.00 exactly I guess

I'm inclined to go with Occam's Razor on this one and I am usually Devil's Advocate arguing that highly improbably events don't by themselves prove "guilt". However, multiple such? Even I think this looks very suspicious (and have become somewhat appalled at the amount of money people are willing to throw away to test if this has been hacked or not).