I installed the WL 9.0.25 update yesterday in my Windows 7 64 bit machine.
I restarted WL and there were no problems.
Later I exited WL and restarted and WL went through the whole process of importing all the plugins. All my preferences were gone and I had to reset all of them.
I have been using WL heavily for for the past two weeks finishing up some post production work for a bunch of concerts we recorded earlier this month.
Any one else have this problem?