I am using the newest version of Internet Security Suite and am having a problem with large executable downloads. After downloading a .exe archive of something like Nero 7 update or the like, upon running it I get an error message that the file is corrupt in some way and then of course installation is not possible. If I shut down ZL Internet Security Security and just try to run the file it still doesn't work, BUT if I re-download it with ZL disabled it runs and installs fine. Any ideas as to why these downloaded files are being corrupted.
I have only noted this with large .exe files. I have had no trouble with large MP3 files for example. Thanks...

Operating System:Windows XP Pro
Software Version:7.0
Product Name:ZoneAlarm Internet Security Suite