performance problem after porting .net 1.1 to 2.0

porting .net project to .net 2.0 cause lot of performance issues .

Server become down because of cpu usage, memory usage.

thanks

You are going to have to supply more details for anyone to be able to offer suggestions. Typically we see sites run much faster moving to 2.0.

hai

we have application which contains

1. client application

2. web application

These application use samewebservice which contains methods that returns datasets.
Dataset contains 7-8 tables (tables are merged in dataset using merge method)
Crystal reports arealso used.

In Web application ,expoted to pdf format

In Client application Crystal reports10 is used.

Aso session and view state is used .

porting .net project to .net 2.0 cause lot of performance issues .

Server become down because of cpu usage, memory usage.

thanks