"Hyped by a good deal of fanfare, outfitted with some new features, and now available for download, Firefox 2.0 has already passed 2 million downloads in less than 24 hours. However, a growing number of users are reporting bugs, widening memory leaks, unexpected instability, poor compatibility, and an overall experience that is inferior to that offered by prior versions of the browser." "SecurityFocus reports an unpatched highly critical vulnerability in Firefox 2.0. This defect has been known since June 2006 but no patch has yet been made available. The developers claimed to have fixed the problem in 1.5.0.5 according to Secunia, but the problem still exists in 2.0 according to SecurityFocus (and I have witnessed the crash personally). If security is the main reason users should switch to Firefox, how do we explain known vulnerabilities remaining unpatched across major releases?" no software is perfect.