Norton Toolbar causes high memory usage in Firefox 30

Hello, 

 

I am running NIS 21.4.0.13, Norton Toolbar 2014.7.3.12 and FIrefox 30. 

 

Windows 7 64 bit, 8 GB ram Intel I7 4800MQ processor, 

 

Windows was freshly installed.  Firefox 30 freshly installed.

 

Firefox progressively uses more and more memory (>2GB) until it becomes completely unusable.  I then have to restart Firefox.  I have to do this about once per hour. 

 

I began selectively disabling my plugins and extensions to isoloate the culprit.  I saw no improvement at all, until I disabled Norton Toolbar. 

 

Voila! Problem solved

 

I don't think this problem is in any way unique to this computer.  I have 3 other computers and they ALL exhibit the same problem and disabling Norton Toolbar has been the solution forr each of them. 

 

I have seen one other thread on this topic and the suggested solution was to update FF to version 30.  I started fresh with version 30, so I don't think that will work. 

 

Actually, this has been going on for over a year and I never imagined that Norton was to blame.  Please tell me there is a solution so that I can continue using Norton Toolbar and stop having to continuously restart FF.