Text Reflow in OS9/OSX

[DLH]

Does anybody know why when I drop individual bought versions of Stone Sans into Suitcase or simply in a fonts folder I get different versions depending on the application? (i.e. Plain / Medium / Regular).

All other fonts have been removed to ensure only one version exists on the machine (or on Suitcase Server).

StoneSans in Illustrator 10 in OSX gives:
Medium / Italic / SemiBold / SemiBold Italic

StoneSans in Illustrator 8 in Classic mode gives
Regular / Italic / SemiBold / SemiBold Italic / Bold / Bold Italic

StoneSans in Photoshop 7 in OSX gives
Medium / Italic / SemiBold / SemiBold Italic

StoneSans in Apple TextEdit in OSX gives
Plain / Italic / SemiBold SemiBold Italic / Bold / Bold Italic

StoneSans in Apple Mail in OSX gives
Plain / Italic / SemiBold SemiBold Italic / Bold / Bold Italic

Artpro 7 in OSX gives:
Plain / Italic / SemiBold SemiBold Italic / Bold / Bold Italic

Microsoft Word (Office X) in OSX gives:
Regular / Italic / Bold / Bold Italic

This problem causes text re-flowing issues; see attached for example screen grabs.

Whilst researching this issue I noticed a similar issue was posted on another forum, but got no response…(also the poster is now un-contactable on the address given);

http://www.myfonts.com/FontForums/read.php?f=4&i=105&t=105

Any help or suggestions would be greatly appreciated.

Thanks,
Dave H