Mavericks slow window drawing speeds?
I went to Maverick for the Calender - which Is a bit better - but not yet done - but the cost of a new celender is a very fast, 6 core, 48gig RAM SSD computer that opens windows veeeeeeery slowly. Addiitonally and i suspect related - you will freeze Mail every time you toss an attachment to it - UNLESS it is zipped for some reason.
Lastly the computer will not turn off or restart - i have ot Force kil it every time.