Data entry in Web Application


We are inserting the 200 records in Web Application. This Appln opening in IE browser and after inserting 50 records, the browser seems to be in non responding state. Sometimes it is giving black and while screen. It is been observed that memory utilization of IE browser seems to be high i.e. 70-80% during data entry. Does any one face such problem? What could be reason and precaution to avoid such problem.

Your help appreciated.