First off - I notice from your earlier posts that you've been using VirusBarrier since at least 2006.
VirusBarrier X5 is unnoticeable in terms of it's effects on newer Mac systems.
It's possible that your system might be better off with a previous version of VirusBarrier - more suited to your specific system configuration. (By the way - we still support older versions of the operating system going back to OS 9 )
If this is truly not your experience with X5, please contact our technical support group at support@intego.com or call us toll free at 512.637.0700 to resolve your problem. I think you'll find our support group not only very knowledgeable but, also quick, professional and friendly.
(Version 10.5.7)