How can Vista be so unpredictable?

I happen to like certain notification area icons such as my MemInfo, HDD Thermometer and a network connected icon, be it Acer's or Window's and I really hate that huge freaking arrow if you select "Hide..."! At least half the time I boot my laptop, icons will be missing. Even more frustrating is the fact that it doesn't always occur, so what gives? And forget about Windows Defender ever being there. Another annoyance is the fact that every time you boot it keeps a log of the icons. Then you have to go into the registry to clean them up. Does anyone know a fail safe app to keep that area the way I want it? Thank You!