The notice tab works fine, IE is one of the oldest apps running fine under wine, for linux or Mac OS X
I saw that before clicking on the BT icon again to open the BT window, the CPU used is even less : I had 2-3% from the wine process and the same for the wineserver (that's cool), when I opened the window it raised again and when I closed it again it went back to previous measures (10-11+2), so maybe it takes some time to "calm down" ? anyway I'm pretty happy with this operating mode now, thanks for the tip for closing the window !
I saw that before clicking on the BT icon again to open the BT window, the CPU used is even less : I had 2-3% from the wine process and the same for the wineserver (that's cool), when I opened the window it raised again and when I closed it again it went back to previous measures (10-11+2), so maybe it takes some time to "calm down" ? anyway I'm pretty happy with this operating mode now, thanks for the tip for closing the window !