I know I know, it had been discussed to death before. There are some solutions but in our application the new problem arised. The main problem are not impatient users cos our forms are secured against double-clicks. The thing is: we're using ExtJS and thus our application awaits for callbacks to display appropiate message to the user. But as some our users use mobile internet the connection faults happen quite often. When callback don't reach the browser, the script displays connection error message.
