Strange DLL Errors and What They May Mean. When working on your Windows computer, you may come across several strange DLL errors that may leave you baffled. IEXPLORE caused an invalid page fault in SHELL32.DLL. This application has failed to start because Msvcp71.dll was not found. Re-installing the application may fix this problem

Microsoft has released Windows Defender Beta 2 (formerly Anti-Spyware) which protects your computer from spyware and other computer baddies. New features of Windows Defender include:
A redesigned and simplified user interface – Incorporating feedback from our customers, the Windows Defender UI has been redesigned to make common tasks easier to accomplish with a warning system that [...]

Web service SiteAdvisor tells you if a web site has known spyware, pop-ups or if it spams users after you register with an email address:
SiteAdvisor helps protect you from all kinds of Web-based security threats including spyware, adware, spam, viruses, browser-based attacks, phishing, online fraud and identity theft.
Our automated testers continually patrol the Web [...]