Firefox 4's installation process is quick and there no need to uninstall any previous verions http://bit.ly/k7QXF1
Mozilla improved their tab game a bit with tab grouping to reduce the potential of browsing clutter
Firefox has been known to be a resource hog. Improvements have been made by Mozilla in version 4 of their browser
Many icons are hidden in different places
Deployment of Internet Explorer 9 can be automated using any of the deployment tools available
The program can also be installed on Windows server 2008 Service Pack, Http://bit.ly/lH2BaL.
Although the application is precisely developed keeping in mind Windows Vista architecture, while installing Internet Explorer 9 on Windows Vista, Service Pack 2 of the operating system is required to be installed as a prerequisite.
It is very efficient and finds exactly your needs quickly
The lack of a print preview can be a bit annoying
A few crashes (chrome only) but not significant
Lacks must have features to get people attention
Low-speed browser performance
Safari's hallmark is its brushed aluminum finish and it includes a nice looking home screen that shows your most visited sites in a thumbnail gallery. http://usat.lyleXsxWZ
Safari 5 includes a feature called Safari Reader that simplifles the view of any article to strip out content like ads.
Extension gallery not as extensive as Firefox's of Chrome's
Tons of extra Features
Some Sites display a message saying the browser is not supported