Ahhh, at least it's not just me (no one else I know has this problem...)
not sure if I want to get another tray manager to 'fix' it though - I already use a AHK tray menu script, and an excellent AHK traymin script (it's unsigned, so I can't give credit - I think I may have gotten it from the forum) which cover off 2/3 of the functionality offered by most tray managers. basically I only need to see those 2 icons, plus a couple of miscellaneous ones (browser, total commander).
I'm surprised this doesn't rate a mention somewhere, then again, maybe it does, but I just can't find it....
It doesn't even appear to be a windows annoyance (and it sure is!!)