When I try to move some slides on the slide sorter it is so slow that I can use sorter for 30s.
It is reproductible on every presentation I open.
Created attachment 40566 [details]
It looks drag and drop in the slide sorter view has performance problem.
Typical scenario to reproduce this:
1. open the attached odp
2. in the slide sorter view, drag a slide and move around a bit, then drop it in a new location.
My CPU (Intel(R) Core(TM)2 Duo CPU T9550 @ 2.66GHz) fan start to work aloud, and the outline of the slide flap around here and there slowly. Only after half to one minute working can it finished the trip. The OS stops responding when it was working.
Need Thorsten's review.
*** This bug has been marked as a duplicate of bug 31860 ***