There's been a lot of talk in the online media about how Firefox's "honeymoon" is over. Articles showing that Firefox has more vulnerabilities than IE have been cropping up frequently.
Most of the articles cite
Secunia for the list of vulnerabilities. But dig into the numbers, and a different picture emerges. Secunia lays out all the numbers (see the upper right hand corner of their webpage). But they summarize it:
Microsoft Internet Explorer 6.x with all vendor patches installed and all vendor workarounds applied, is currently affected by one or more Secunia advisories rated Highly critical
Mozilla Firefox 1.x with all vendor patches installed and all vendor workarounds applied, is currently affected by one or more Secunia advisories rated Less critical
Opera 8.x with all vendor patches installed and all vendor workarounds applied, is currently affected by one or more Secunia advisories rated Not critical
More graphs and charts from Secunia below: