DW CS3 Refuses to Synchronize!

Question

This may be related to the
previous
post, but my symptoms are slightly different so I thought I'd
post separately.
I had Studio8 installed, and upgraded yesterday to CS3 (this
is on an intel Mac running 10.4.9). It was nice that CS3 detected
and imported all of my existing sites for me. However, I'm
completely unable to synchronize.
When I try, Dreamweaver reports that no sync. is necessary
(not true). Furthermore, when I ask it to display the list of files
for manual disposition, no files are listed even if I've tried to
sync the entire site. The whole process takes about 1 second on a
site with thousands of files (a normal sync check should take about
30 seconds for this particular site). To make matters worse, when I
reopen the site back in Studio8, the same problem now happens
there, too. Note that I had absolutely no problem syncing just
prior to installing CS3.
I have not found a solution to this problem. Restarting DW,
rebooting, recreating my site cache, unchecking "Maintain Sync.
Info" in the site preferences and subsequently rechecking it after
rebuilding the site's cache, blowing away my various "_notes"
directories...all have failed. Apparently, I'm going to be unable
to sync. This is a seriously not good.
If anyone has a work-around or knows what could be causing
this problem, *please* let me know.

Answer 1

@David - we cross-posted. I didn't see your response.
Answers to your questions:
1. Modify a file and save it. Is the modified date/time the
current
date/time?
[Steve] Yes, it's the current date/time both in the Finder
and in DW's browser. 5/4/07 2:36pm (local)
2. In the expanded view of the Files panel, what's the remote
server say
for the modified date/time?
[Steve] 5/4/07 2:26pm
3. In the Files panel, right-click the local file and chose
Display
Synchronize Information. What does it say? The important part
is just the
first few lines (the explanation text is static text that we
don't need):
[Steve] "There is no synchronize informaption for [file].
This is probably because..."
Manually putting the file, and looking again, it now says:
File: [myfile]
Local Remote Time: 5/4/07 2:36 PM
Remote Time: 5:4:07 2:41 PM
I then made an edit. The local timestamp is 2:42pm. I select
the file and try to synchronize it. I still get the "No sync. is
necessary" dialog, and, like before, if I ask to look at the files,
the list is empty.
Looking at the Display Synchronize Info dialog again, I see
the timestamps updated:
Local Remote Time: 5/4/07 2:36 PM
Remote Time: 5/4/07 2:41 PM
Local Testing Time: File has not be transferred to/from this
server
Testing Time: File has not be transferred to/from this server
Note that Dreamweaver still believes the file hasn't been
transferred even though it has!
Also note that the Display Synchronize Info local timestamp
does not match the one in the file pane, even after
refreshing.