See the following links to get you up to speed on things:

1. What you should know about WMA/WMV Files

2. autogenerated spam results

3. Influx of Porn recently being Spammed on Network - How to Stop it returning in your search results

4. Movie download issues

5. Learn to ue Bitzi! How to use Bitzi Web Lookup ...

Besides those, be sure to have these utilities just in case, a good AntiVirus program with up to date definitions. Also get ad-ware (FREE), & also Spybot - Search & Destroy (FREE)

& see WARNING: Viruses on network you should be aware of!