I had problems in the past with corrupt icons on my taskbar and battery icon not showing. This was resolved using click here
However, the icons are all permanently on display even though hide when inactive is selected. There is no little arrow that you can click on to view the icons, it is just sat there in a solid block. Any ideas anyone? Why does it keep corrupting (I have to run the above program almost everytime I log on to get the battery icon to appear).