My observations (and fixes) on Jaguar upon installation:

/usr/local/bin is no longer in the $PATH.
	To fix, execute:     echo "source /usr/share/tcsh/examples/rc" >> ~/.tcshrc     echo "source /usr/share/tcsh/examples/login" >> ~/.login
NcFTP has been removed.
	See my previous installation instructions or get it here.
/usr/share/init/tcsh/aliases is gone.
	To fix, execute:     echo "source /usr/share/tcsh/examples/aliases" >> ~/.tcshrc You might also want to look at this article.
FTP access is turned off.
	Needs to be turned back on via the Sharing control panel.
Printer Sharing is now available in the Sharing control panel.
	It's about time. Very cool! However USB Printer Sharing with computers running OS 9 is only supported through Classic. Does not seem to work with 10.1.5 or Windows either.
The Finder command-option shortcuts have been changed to command-shift.
	Takes some time getting used to.
The locate/whatis databases are not rebuilt.
	To fix, execute:     sudo /private/etc/weekly
The Address Book LDAP implementation is useless.
	Returning the name, email address and phone number is just not good enough.
Windows File Sharing is not as straight forward as it looks.
	I was able to mount a shared folder from a Windows machine, but not the other way around. Still working on that one. [Update] Resetting my password did the trick. Thanks Mike.
The Finder open window zooming effect is annoying.
	How do I turn the damn thing off?
An ODBC Administrator is included in the Utilities folder.
	I haven't tried it, but should prove to be useful.
A Terminal window can now be split into horizontal panes.
	Sweet!
This new cursor is way too fat.
	And I don't mean pretty hot and tempting.
command-option-click to hide current application.
	Just like it has been since System 7. option-click is still supported too. Great!
Interface Sound Effects are turned on by default.
	Can be turned off in the Sound control panel.
The ability to Replace All items when copying/moving files has been added.
	Thank God! No smart folder replace like Windows though.
VNCDimension 0.7.10 no longer works.
	Thankfully VNCThing still works.

Unfortunately this annoying problem has not been addressed. At least there is a way navigate thru the elements of open/save dialogs using the tab key.