When opening a pdf file for first time and try to do some operations (like scrolling, highlight, marking or save other type etc), the software freezes for like 30s to a minute.. and the works fine. (it is not crashing). Thereafter even after opening multiple files an doing any changes, works smoother. But once I close the adobe acrobat completely, and then open a pdf file, then this problem repeats. I had tested it for past 1 month and this appears. Please resolve this issue. It is really ******* off!