Script is working fine in QTP9.2 but it has hang issue in 10.0

It doesn't occur every time. But it occurs more often. It hangs at the end of test script after closing browser window,removing unwanted data from excel results file and saving test results file(Excel file).

Opened HP helpdesk ticket. They suggested some pathces(00626,00635,00661). Even after installing patches,issue is not resolved

Any suggestions are Appreciated!