according to customers needs,
our company have developed a sync process which automate the assignments given to new users.
the sync processs is running nightly for an hour and updates all assignments according to site permissions and XML rules.
if you would like to know more detaild, please write me to
as for the long waiting:
basically it has to do with the number of the users assign to a specific site, above 1000 per site becomes slow - avoid it.
a huge improvment would be to comile and install SLK on 64-bit enviroment.