I noticed some strange behavior in rendering some pngs on the iPad. On the simulator everything works well. Sparrow version 2.0.1, i will test with sparrow master asap. Here's a couple of images which explain better than my poor english.
http://imgur.com/a/7r066#0
There's the device screenshot, simulator screenshot, and the png i use!
Thanks!
update: With sparrow 1.4 and sparrow master the png is visualized without those borders (but with sparrow master I still have those spviewcontroller problems on hold)