瀏覽器 + 軟件 最小化

Right click your shortcut icon for launching Firefox. Click PropertiesClick to open Shortcut tab (the middle one)In the Run dialog box, click down arrow to show options. Click to select maximize to run. Click OK. Repeat for your MSN or Adobe shortcuts.
Reason: There might be a malware in your system changing these settings. Suggest to run your antivirus program to scan and get rid of it.

Good luck.