ZoneAlarm Free Firewall
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Full user review
"CPU Gobbling Nightmare"
Effective firewall and antivirus software
Gobbles CPU at an insane rate after spending an hour or so online
One of the most disappointing software versions ever. In fact, after years of using CNet.com, this software was so bad that I registered just to post this review.
This version of ZoneAlarm has a well known issue of consuming an insane amount of computer CPU memory and slowing systems to almost a halt after 1-2 hours of intense internet activity.
Unless you are a very casual internet user, I would definitely not recommend using this.
539,472 K Mem Usage after 35 minutes online.
The official response from ZoneAlarm support is that the software is "working as intended". Perhaps they have a different view, but for me having a 'safe' computer is worth zip if it slows things down so much that any online applications become virtually unusable.