>> I once bought some cheap (but very good) OEM Logitech mouses with 3
    >> buttons (M/N: M-MD15L-9F) and they too run for years only with the
    >> Protocol Microsoft setting. When a new Xfree release came out, i
    >> always tried Protocol Logitech but with no success.

    Andrew> Hmm, glad to hear someone else has used a Logitech...  The thing
    Andrew> that is weird is that even with the Microsoft mouse which works
    Andrew> fine, specifying 'Protocol "Logitech"' causes X to hang with the
    Andrew> 'inappropriate IOCTL' problem.  To me this implies something with
    Andrew> the actual tty device.

Try "MouseMan" - it's the Micro$oft protocol extended by a byte for the
middle mouse button according to XF86 src.