Piper Jaffray analyst Gene Munster today issued a new research report sharing data from research firm NPD covering Apple's U.S. Mac sales for the January-February timeframe, revealing that Apple's sales are currently up 14% year-over-year. The performance is down somewhat from the 31% growth seen for January alone, but remains very solid as Apple's iMac shortages appear to have eased.We have analyzed domestic NPD retail data for the months of January and February which suggests Mac sales were up 14% y/y through the first two months of the March quarter. As we have previously discussed, we believe the Y/Y improvement is driven by Apple beginning to improve supply of iMacs as the company noted the product was constrained in the December quarter. CEO Ti
