Sorry for the lack of updates but found another good guide at the  BleepingComptuer.com Malware Removal section:

XLG Security Center, or XLGuarder, is a rogue anti-spyware program that displays misleading alerts and scan results in order to scare you into purchasing the software. When first installed, XLG Security Center will automatically scan your computer and list a variety of files on your computer as dangerous risks that cannot be removed unless you first purchase the software.

Source: XLG Security Center Removal Instructions

Sorry for the lack of updates but found another good guide at PCBugSquad.com:

THe USS.exe Trojan is an executable that gets installed on your computer along with other malware.  This infection will also install a service called wasfsd that uses the filename C:\Windows\System32\drivers\System32. When running, this Trojan will display fake alerts that state your computer is being attacked or is infected with particular infections.  It will then ask if you would like to block or fix these infections, and if you specify yes, will open up an Internet Explorer window where it prompts you to buy Trusted Antivirus.

Source: How to remove the USS.exe Trojan

Found a guide on PCBugSquad.com on removing this new rogue:

Antivirus Master is a new rogue anti-spyware program that is a master of nothing. This program proclaims itself as a master of removing malware from your computer. In reality, though, this program is the actual infection. When Antivirus Master scans your computer it will list infections that do not exist. Then, in order to remove these infections, you must first purchase the software in order to do so. As we did not purchase it, I am sure once it was purchased those threats would immediately be gone.

Source:  How to uninstall Antivirus Master (Removal Instructions)

If you use ZoneAlarm and lately have bee having trouble connecting to the internet then it may be caused by a new Microsoft Update that was release.  An explanation and guide can be found at BleepingComputer.com

Guide On Fixing Connectivity Problems For Users Running Zonealarm

An interesting article was published by Raymond.cc where they have  installed all of the major anti-malware software and determined how much memory they use on your computer.  The results show that the app that used the lowest memory is PC Tools Antivirus and the one that used the most is G DATA AntiVirus 2008, which took up 130 MB.

It appears that with Microsoft’s release of Update KB951748 that it has broken ZoneAlarm. In an attempt to resolve some vulnerabilities in the Windows DNS Services, it has also caused a lot of problems for ZoneAlarm users.

If you use ZoneAlarm and have installed the update you may have found that you no longer can connect to the Internet.  It appears this does not affect basic services like pinging, but rather services that rely on DNS.  The problem, as discussed here, can be resolved by download and install the latest update from ZoneAlarm.

Found a guide on PCBugSquad.com on removing this new rogue:

PCTotalDefender is a new rogue anti-spyware program that displays fake information in order to scare you into purchasing the program.  This program is typically advertised through sites that pretend to be scanning your computer. In reality they are just advertisements trying to trick you into purchasing the program. It is suggested that you remove this infection as it is known to slow down your computer and display popups for other rogue anti-spyware programs.

Source:  How to uninstall PCTotalDefender from your computer

New guide at BleepingComputer.com:

Wista Antivirus is a rogue anti-spyware program that deliberately displays false information to scare you into purchasing their software. When Wista Antivirus is installed on your computer, it will automatically scan for malware and display a variety of infections on your computer that cannot be removed unless you first purchase the software. These infections, though, are all fake and are only being shown in order to scare you into thinking you are infected. [Read More…]

Source: Bleeping Computer Malware Removal Guides

A recent collaborative study between Google, the Swiss Federal Institute of Technology, and IBM offers new insight into how many people surfing the web are doing so safely. According to the report, a clear majority of users (some 59 percent) are using the latest version of their preferred Internet browser—but that still leaves 40.1 percent who aren’t. That’s a troublingly high number for anyone working in IT security, given that virtually all (89.4 percent) of the vulnerabilities reported in 2007 were remote exploits. Not all of these exploits specifically targeted the web browser, but it’s become the target of choice for an increasingly large percentage of all attacks. Proper browser security is therefore of paramount concern. [Read More…]

Source: ArsTechnica

According to a new study from researchers at Google, IBM and ETH Zurich, there are about 637 million Google users surfing the Internet with a vulnerable Web browser.

Using data from Google search queries and security vulnerability aggregator Secunia, the study (HTML or PDF) found that a whopping 45 percent of Google users “were not using the most secure Web browser version on any working day from January 2007 to June 2008.” [Read More…]

Source: ZDnet