Hidden Icons in the Taskbar issue

I have SpeedFan installed in W7 and it works fine. The problem is, that each time I power up and boot into W7, the icon is no longer visible in the Taskbar area. And, each time I go into "customize" to get it back, there is one more instance of SpeedFan in there and I have to choose "show icon & notification" for the latest instance to get it back.

Other icons I have showing stay like that (ESET anti virus).

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