We are running our webstore for two years and there were a lot of testing on it. So i decided to do a clean install and just move products, template, customers and orders (just tables in mysql). Everything works as it should, except when i try to edit a customer and then try to save wait. I get Please wait... popup and then i can wait for a whole day. I've checked all the logs, nothing, did replace all adminhtml and js folders and still the same.
Any idea in which direction i should be looking?
This is a linux server and i also have windows test site and there is the same error. So i guess it's not host problem.