Help required to make the processing of workbook fast

Hi,

I am facing an abnormal process. In the attached workbook, there is a sheet named "AOR". I dont know why the sheet process very slow, be it calculation, copy paste or changing cell height . I mean the processing is very slow. I have done most of work on it and cant bear to redo on from fresh basis on new sheet as i have to submit the same ASAP.

I hope some one may be knowing to resolve issue. Also help with instruction as how to handle the issue as this is only a part of file.
I ned to make my data base improved on basis of suggestions received

I am waiting for some one to help or correct the file

I copied/pasted, changed cell size (height and width) and it processes at a seemingly normal speed. I don't see the problem you describe....

i have tried on three different system.Processing is slow. I hope u are talking about sheet name "AOR". Other Sheet are working normally. The problem is in AOR sheet. Like of u put a summation function, it takes around 15 seconds to compute, but in other sheet the value is computed as soon as enter is pressed.

Kindly confirm once again if AOR named sheet is working normally on your systems.

if some more experts may give there opinion ......