Big mistake. Major bloatware. That goldang Yahoo search toolbar is also the only way to control the browser filter from the browser itself; delete it and you have to do that from the control panel. That filter has known incompatibilities with IE7 under Vista - there's a patch I can look up if you need it. Even after installing it the browser freezes up at random when it senses certain old Java content or some Active-X stuff I haven't identified yet. I turned it off.
Same sad story we've seen with Norton/Symantec and McAffee. No simple, sleek AV engine, you're gonna get a suite containing a firewall, browser filters, etc, etc, whether you like it or not.
I made the decision to replace it earlier this week but I haven't identified a replacement yet. I'll be looking at this thread for suggestions. Free isn't important; unobtrusive is. Thanks for posting this.
I'm going to bring up my Netstat and see if it's still eating my BW. *fingers crossed*