Am getting this message when prompted to install the update:
"The procedure entry point SetDllDirectoryW could not be located in the dynamic link library KERNEL32.dll."
Are you by chance using Windows 2000 or a pre-SP3 version of Windows XP?
Windows 2000: see http://forums.adobe.com/thread/1012569
Windows XP: install Service Pack 3.
P.S. if Windows 2000, you need to download and modify the offline installer from http://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-windows.html#mai n-pars_header
Retrieving data ...