Well I am using Windows 7 on my computer. I have downloaded PDF file from the internet. Well when I try to cut or copy move file the transfer window which lets you about the rate of transferring and approximate time to complete the process always prompts that itís calculating. Normally pdf file are of 2 kilobytes but it took two hours and still the process is not completed. When I try to shut down it prompts that there is a program which is require to be closed and it shows the lists of the program. I tried everything to solve the matter but all of my efforts were resulted nothing. Any help from your side will be highly appreciated. Thanks in advance.