Viruz i have this toshiba laptop, and i've got good anti virus, norton to be exact, scanned my pc and they have found threats and delete it,. but the virus is still there. i dont wanna format it co'z ive got alot in it..the virus name as i could see it was recycler and system volume information ..can you help me delete it,. it's slowing my pc and and messanger keep on closing after you sign in., and now i'm using my desktop the messangers work out fine...

Norton has traditional virus detection method like Signature base and Heuristics base detection, with anti-virus, anti-rootkit, anti-malware, anti-spyware etc. Symantec upgrade and releases new and more improved features with its every release. Signature based detection includes searching for knowing structure within executable code, however your computer can be infected with most new virus which signature is not known. In that case heuristics method can be use it can identify new viruses by variation of such code, in files. Malwares are very difficult to detect even for the most new anti-virus software. If you are using Norton Antivirus, you should update its data-base and virus definition every day, so that when you scan your computer, it can detect all possible threats. Some new features like SONAR, it examines the behaviour of applications to decide whether they are malicious. Various things are checked such as if the program create a desktop shortcut or create add/remove programs entry before determining the program is malicious.

Norton insight is a program that comes with the Norton 360. It improves the speed and quality of computer scan. It identifies well known files of client machine and excludes them from constant monitoring and scanning. It only scans unknown and unsecured files. Skipping the already known files helps the scan more impact.

Norton 360 introduced a very effective tool - Norton Power Eraser, it removes threats which standard anti-virus may miss. It cleans up system where malware prevents anti-virus installation. Apart from these, the key technologies of Norton anti-virus software are anti-virus, anti-spyware, anti-rootkit, and pulse-update - provides up-to-the-minute updates that protect against the latest threats without slowing down your computer, firewall software - that can use for mapping and monitoring network.

<p>There are many different types companies, who create different anti-virus software. One of the most popular companies is Symantec Corporation. Symantec has its own products like Symantec Anti-virus, Symantec internet security, Symantec also have another anti-virus products called Norton. Symantec launched various versions of its products and till now, the latest version of Symantec Corporation is Norton Internet Security 2011. It's about 25 years before Norton antivirus came on the market. The name of the first Norton anti-virus was Norton Commander, released in the year 1986, served as a standard interface for DOS. This version of Norton was invented to protect DOS from malicious programs. Norton anti-virus can be listed as an oldest anti-virus program. The initial version of Norton commander was called vdos with a slandered interface for dos, for initial virus protection.<br /> <p> <br> <p>Compared to other anti-virus software, Norton provides in-built firewall software, e-mail scanner, anti-rootkit, and anti-spyware, anti-virus. Some newer options released like Sonar protection, file insight, threat insight, insight network etc. It is fast and compatible with vista like operating systems.<br> <p> <br> <p>Other popular companies are McAfee, which provides anti-virus, anti-spyware, firewall software like features and PC utilities, like QuickClean tool, defragmenter and file shredder, which lets you permanently delete sensitive files in a manner that they can't be recovered. Protection software is Kaspersky; it also provides anti-spyware, anti-virus and firewall software. One very unique feature of Kaspersky is the virtual keyboard; this small application lets you input sensitive information like credit card number, password in online without worrying about keyloggers or hackers.<br> <p> <br> <p>Many other anti-virus software have been uses, like ESENT Webrot, NOD32, QuickHeal, AVG, AVAST anti-virus etc. you can also download free versions of anti-virus from online. Whichever anti-virus you're using make sure one thing that you have to update it regularly to protect your computer.