its pretty much all systems, crash a windows explorer and normally the whole lot go down together, then the startbar instance of explorer restarts, and it doesnt have half of the tray icons in it any more, i loose winamp,damon tools,nav,quicktime,mirc etc etc etc. So it may be the explorer not keeping a refrence back to the mirc in question that cuases it to vanish or a bad refrence from mirc, no real idea here, I have had mirc crash and the icon remains untill u move the mouse over it, so theres some level of the code being run or accessed, and when its gone explorer just says, "well hes gone lets kill his icon"