CS4 not remembering Site Definitions

I don't know how this started happening but when I quit DW CS4 on OSX.5 and
then start up again, I notice that while my site definitions are there, the
login and passwords are not. I have to retype them in again, or delete the
definition and import the old one back in. Then it works. Why is this
happening? Do I have to delete something to make this work properly?

even if I repair keychains, I still have the problem. I've removed keychains
and started fresh, and within a few days the same problem occurs. And if I do
a keychain repair, it says everything is fine. I think it's a flaw with cs4.
IN my case, I sync with ME account so multiple computers have all the same key
information, including keychains. This may have something to do with the
problems people are having.

So I'm having the same type problems - the other day (without crashing
or anything like that) Dreamweaver lost all my site definitions. I
restored one, and it kept it, but then lost the username/password
(again, no crashing or anything unusual - CS4 seems really buggy in
lots of ways).

So I deleted all my old keychains hoping that will help. Next question
-

I have TimeMachine, so I should be able to restore the files that
Dreamweaver uses to store all that info. Where do I find these files?
Even with new sites defined, I can't find any .ste files anywhere on
my computer. Is there something else I should be looking for?