Currently Being ModeratedOct 17, 2011 3:42 PM (in response to gresmi)
Actually, I spoke too soon. It looks like 10.7.2 may have fixed this. Screen sharing is definitely improved all-round in 10.7.2 and I've been playing with it a while now and the issue seems to have been (largely) resolved.
So it looks like, if you're having this problem, updating is the answer.
Currently Being ModeratedFeb 6, 2013 11:52 PM (in response to gresmi)
The screensharing CPU issue is still there in Mac OS 10.8.2 :-(
(i have the problem on my mid-2011 mac-mini server)
TOP sorted by CPU shows clearly two "screensharing"/"Screensharing" processes eating each about 45% CPU