I updated firefox to the most recent update on my laptop. The cursor would disappear. Windows/computer would freeze. Computer screen would go blank. It was a non-stop battle. Thought I had a virus so did a virus scan and all seemed good, no virus found. I didn't realize exactly what was going on until I downloaded the firefox updates on my home computer and and similar problems occured on that computer. Then my daughter complained of the same thing. I deleted firefox out of my home computer then reinstalled the newest version of firefox... read full review »