I had to respring again today (but not becouse of the problem) ,3 days without "this problem" with only 2 resprings (not forced) , I think the problem is solved (sometimes I had to respring after 2 or 3 calls). IMO some of the plugins is causing this problem , I didnt found that ProSwitcher have this kind of bug tho. I will monitor day or two more and will inform you.