Sorry I have not posted in about a week, but I have been on vacation. I am currently trying to catch up with all the e-mail, and other stuff that I have to do that has been ignored while I was gone.
Below is an interesting video that shows a simulation of what could happen if you visit a rogue web site that can take advantage of known security holes in your applications if you don't patch your system regularly. The attacks shown in this video are plausible, but exaggerated
This video is unbalanced in that it focuses on Internet Explorer, but a security hole is a security hole. Every OS (including Linux and the Mac OS) and applications can be affected by these programming bugs.