dear friends, i m using Now from last two years, this prob comes when 1) your internet bandwith is low, because now is design to work on minimum 512 kb net. for solve this you can use tata or bharti or bsnl setup as your ISP (INTERNET SERVICE PROVIDER) for download link is :-
ftp://203.199.75.110/common/now/Setup/ , user id is ftpguest and password is FTPGUEST (CAPITAL) I mean if you using tata conection then u need to download tata seup, same if u use bharti internet then bharti setup same bsnl setup if u using bsnl net, one more thing i m giving u toll free no of now team 1800-2200-52. call them if your problem still giving u tention enjoy nifty46( dhiraj sood)