Apple Safari 5.0.1 has been released, alongside Safari 4.1.1 fixing last weeks auto-fill vulnerability.

Safaro 5.0.1 also enables extensions for the browser, with Apple also releasing a gallery with some of the early Safari 5 extensions.

Apple has also released a security bulletin explaining the vulnerabilities that have been fixed.

Safari 5.0.1 can be downloaded from the Apple website, while extensions can be downloaded from the new Safari Extensions Gallery.

Mozilla has released Beta 2 of Firefox 4, which is now available in 24 languages.

The update includes many changes, including apps tab feature.

“There are some websites you visit many times throughout your day, such as your email, social networks, music or game sites. Now you can turn the websites you use most into App Tabs to easily find the ones you need” said a release from Mozilla.

Mac users now receive the new interface that was delivered to Windows users in Beta 1, and puts tabs on top by default.

There is also more support for CSS3 transitions, retained layers allowing for faster scrolling on complex websites, and changes to the XPCOM framework reducing the browser start up time.

A full list of changes can be read in the release notes. Firefox 4 Beta 2 can be downloaded from the Firefox Beta website.

Google Chrome 5.0.375.125 has been pushed out to the stable channel, fixing five security issues and other bugs.

Three of the security issues are rated as of high importance, one as medium, and one as low.

The update is available for Windows, Mac, Linux and Chrome Frame and will be pushed out to users automatically over the coming days.

New users can download Chrome from the Google Chrome website.

The Google Chrome Team have upped the ante, aiming to release a new stable version of the browser every six weeks.

The new update schedule cuts the previous release schedule in half, allowing users to get finished features sooner.

“We have new features coming out all the time and do not want users to have to wait months before they can use them” wrote Chrome Project Manager Anthony Laforge.

This also doesn’t mean the end of stability. “While pace is important to us, we are all committed to maintaining high quality releases — if a feature is not ready, it will not ship in a stable release” continued Laforge.

Laforge also notes that while version numbers will begin to increase at a faster pace, differentiation between versions will not be as drastic as have been in the past.

End users may not notice the difference however, with updates being pushed out silently.

Internet Explorer 8′s Smartscreen Filter has passed a new milestone, passing the one billionth stopped malware download.

“Socially engineering attacks like malware are a growing threat on the internet and are one of the most common risks to people’s safety online” wrote Microsoft’s James Pratt.

“We have got better and better at blocking malware through the SmartScreen Filter because we have continued to invest in our back end service since we released IE8 in March 2009″ said Pratt.

In the last two months, more than 100 million malware attempts have been blocked by Internet Explorer 8, 5 times as many as the same time last year, with more than 1.7 times the users.

The continued investment and development of malware protection is great for consumers, and helps keep their home PC’s safe.

Malware, also known as phishing (pronounced fishing), protection can also be found in other popular browsers such as Firefox, Chrome, and Opera.

Future versions of Firefox are to get a new tab organisation feature called Tab Candy. The feature, which resembles exposé from Mac OS X, allows users to easily group and organise tabs into groups.

“With one keystroke Tab Candy shows an overview of all tabs to allow you to quickly locate and switch between them. Tab Candy also lets you group tabs to organize your work flow. You can create a group for your vacation, work, recipes, games and social sites, however it makes sense to you to group tabs. When you switch to a grouped tab only the relevant tabs are shown in the tab bar, which helps you focus on what you want” wrote Mozilla’s Aza Raskin.

Available as an alpha build, Tab Candy is written solely with HTML, CSS and JavaScript, meaning there is no native code for any platform.

More details on the project can be found in the Mozilla Wiki, while an alpha preview can be downloaded form the Mozilla FTP.

Hot on the heals of Firefox 3.6.7, Mozilla have released Firefox 3.6.8 fixing a single bug.

The update fixes severe crashing bug which many users were seeing when they viewed pages containing plugins.

More details can be found in the release notes. The update will be pushed out to existing Firefox 3.6.x users in the coming days. New users can download the browser from the Firefox website.

A new security vulnerability has been found in Apple Safari’s Autofill feature, which can allow malicious websites to extract users personal information from their Address Book.

“All a malicious website would have to do to surreptitiously extract Address Book card data from Safari is dynamically create form text fields with the aforementioned names, probably invisibly, and then simulate A-Z keystroke events using JavaScript. When data is populated, that is AutoFill’ed, it can be accessed and sent to the attacker” wrote security researcher, Jeremiah Grossman.

Grossman submitted the vulnerability to Apple on 17th June, but Apple is yet to comment on the issue. Grossman has also released proof-of-concept code illustrating how the vulnerability works.

The vulnerability affects both Safari 4 and Safari 5 on Mac computers, with no patch in sight from Apple.

Mozilla has released Firefox 3.6.7, fixing several security and stability issues.

A total of 14 security vulnerabilities have been patched, 4 of which are rated as moderate, 2 high, and 8 are of critical severity. A full list of changes can be read in the release notes.

Current Firefox 3.6.x users will receive the update  in the coming days,  while new users can download Firefox from the Firefox website.

Mozilla’s answer to Firefox Sync for Apple ‘i’ products has been approved in the Apple App Store.

Mozilla’s description explains it all:

“Firefox Home provides access to your desktop history, bookmarks and open tabs on your iPhone. It’s not a Web browser itself, but with it you can get up and go and have everything waiting for you on your iPhone. Firefox Home is secure from end-to-end so your data is always safe. And, of course, it’s free.”

Apple iPhone, iPad, and iPod Touch users can download Firefox Home from the App Store today.