You have experienced some of these problems already:

• You hit a button – maybe without recognizing it – and a part of a program that you just have been working with disappeared.
• Your PC slowed down over time.
  • You might have caught a virus and cannot detect its location.
  • You might have accumulated to much “garbage”. Emptying the garbage bin did not resolve the issue.
• You discovered software on you PC that you never installed.
• Looks like a unimportant issue: Some of your task tray buttons disappeared. It actually is not an unimportant issue.
• You have subscribed to multiple messenger services like AIM, Yahoo!, ICQ etc. and all these little messenger windows bother.
• And much more …

via PC-Assistance | Tiiws.com.