The resources used by any program is directly proportional to the amount of processing it is doing (in this case, more Internet traffic, such as running a web server or sharing lots of file uploads and downloads via a file sharing program, means more resources used). Depending on system configuration, and the applications you are running at the time, you may also see Internet speeds slow a little bit with ZoneAlarm running.
Users will also see more resource usage during the Program Learning phase, right after installation. This should go down after a few days to a week, when you set the Program setting to High, taking ZA out of learning mode. Note that when the ZA icon appears at the bottom of your screen, that is only the User Interface - the actual firewall service starts much sooner.
If resource usage remains high, there are several possible solutions:
- Upgrade to the latest version. Be sure to use the 'Clean Install' option.
- Set the number of alerts shown to 50. While this number can be set as high as 999, please remember that these are stored in memory as well, and will take more resources.
High CPU, vsmon locked up, Event Log message about deleting corrupt database
If you use a proxy system, such as web-based Anonymizer, Privacy settings may affect Internet speeds. Try lowering Privacy settings to see if that helps.
If you find that vsmon is using all of your CPU time, try disabling programs one at a time to see if you can locate the conflict. Also be sure to watch your Alerts in ZA. If you find a specific program that appears to have a conflict with ZA, please forward that information to us for investigation, along with steps on how to reproduce the issue.