I'm on Windows 7 64 bit, i have mIRC 6.35 and mIRC 7.0 open and sat in the taskbar, if i hover my mouse over 6.35 a tooltip appears showing what's in your titlebar of mIRC, but this disappears when you move the mouse away. The same applies to mIRC 7.0 but the tooltip stays up for a much longer, like 6 or 7 seconds. This is actually annoying if you switch to another window because it still sits there.