Adware and Spyware are programs that get on your computer without your permission and cause all kinds of problems. Slow internet, slow everything, errors, lock-ups & crashes very well could be indications of adware infestation.
Experience has proven SpyBot to be the champion at not only cleaning up an infested system, but it's the best at preventing these programs from being installed behind the scenes and without your permission.
Sometimes SpyBot has a hard time cleaning a system. When I have that trouble, I use "HiJack This!" to remove startup trouble; then reboot to use those settings. This program is designed for more advanced users. There are online forums where you can get help identifying what items might be causing the trouble.
These two programs are free and are listed on my home page
here are some other articles and strategies that may help:
=== === === === === ===
4 Simple Steps for removing Spyware, Hijackers, Viruses, and other Malware
Some other good suggestions
=== === === === === ===
( keywords: adware spyware spybot advertisement software )