I have a URGENT and bizarre FCP 4 problem

I have a G4 tower running 10.2.6 and Final Cut Pro 4.

It is doing the following 3 problems.  All on an intermittent basis. 

1 -  Intermittently stops doing an autosaves.  I have to watch this
folder like a hawk.
2 ? The manual ?save? command doesn?t always work.  Yesterday, I lost
6 hours work since it never saved my project file, even though I did a
command-S
3 ? Worst of an, it randomly quits FCP for no reason.  At least 4-6
times a day it quits suddenly, losing any unsaved work.  Since the
Save command is not reliable, this could mean many hours of work..


I have not upgraded to FCP 4.1 yet, but did install these updates,
which did NOT make the problem go away:

?	Java 1.4.1 
?	Safari 1.0 
?	QuickTime 6.3 
?	Mac OS X Update Combined 10.2.6 
?	iSync 1.1 
?	iDVD Update 3.0.1 
?	Pro Application Support 1.1 
?	Java 1.4.1 
?	QuickTime 6.5 
?	Mac OS X Update 10.2.8 
?	Compressor 1.1 1.1 
?	QuickTime MPEG-2 6.4 
?	QuickTime for Java 2.0.1
?	FCP QT Render Plug-in 4.0.2 
?	Pro App Runtime - Mac OS X v10.2 (Jaguar  1.5.1)
?	QuickTime for Java Update v2.0 
?	Security Update 2003-06-09 2.0 
?	Security Update 2003-11-19 1.0 
?	Security Update 2003-12-05 1.0 
?	Security Update 2003-12-19 1.0 

Help!

thanx in advnce,
Jim West