MSN Messenger Two System Tray Icons

Since upgrading first to MSN Messenger 6 and now MSN Messenger 6.1 every time I reboot my computer I get two MSN Messenger icons in
my system try and one of them is just a black square. Neither of the icons auto-logs itself in. If I exit out of one of them both
of them exit it out and then if I manually start MSN Messenger again I get just the one normal icon in the system tray and it
auto-logs itself in and works fine. If I uninstall MSN Messenger and go back to using just Windows Messenger 5 the mysterious
double icon/square icon problem goes away, but as soon as I reinstall MSN Messenger the double icon/square icon problem returns.
It's easy enough to work around by simply closing and reopening MSN Messenger once my computer if fully up, but it would be nice if
I could make it go away.

Any input would be greatly appreciated.

Thanks!