Global Equities Research analyst Trip Chowdhry sent a note to investors on alert on Wednesday that the weak back to school sales season last week, the Mac falls 35% to 40% of July weekend 23. He was "probably one of the slowest weekend for Mac sales," said Chowdhry, suggesting that the increase in gas prices could be responsible for the fall. Chowdhry interviewed four different university libraries of data, which is not seen as a set of samples large enough for us, and clerks in stores, said sales decline is probably due to summer vacations. Chowdhry believes that Apple could attract more customers by offering rebates of $ 100 in cash instead of store cards application. Not all analysts agree, of course: according to analyst Maynard Um of UBS CultofMac recently reported that the Mac "is still the most popular among consumers and students returning to school.