[Evolution] Repeating folders in Evolution 1.5, IMAP slowness

["Bruce A. Mallett" <bam NightStorm com>]

A while back I grabbed Fedora FC2 and tried the Evolution 1.5.  At that 
time I saw a problem where all of my IMAP folders were repeated.   This 
weekend I reloaded that system with SuSE 9.0, tried 1.4.6 on it, and 
then grabbed Evolution 1.5 development version via red carpet.  It too 
has that problem (1.4.x does not).

It appears that as soon as I uncheck "Check all folders" in the email 
settings that I get the duplicated folders.  Once this happens there is 
no going back: re-checking that option does not get rid of the problem.

Folders are duplicated in the tree such that there is one occurance of 
the top level folder for each subfolder in the tree plus one for each 
top-level folder.  Thus if the tree looks like this:
 TopFolder1
   SubFolder1
   SubFolder2
     SubSubFolder1

Then Evolution will show 4 copies of "TopFolder1" (and each will have 
the entire subtree under it).

I'm attaching a couple of screenshots to help clarify.  I'm curious if 
I'm the only one seeing this or is this a known problem?

Also why is Evolution so slow with IMAP (which is what got me started 
trying 1.5 in the first place)?  Mozilla Messenger sync.s my folders, 
brings up my inbox, does filtering, and junk mail filtering all within 
about the amount of time it takes the window to appear.  Evolution takes 
anywhere from 4 to 7 minutes and I've not even got filters installed on 
it.  It was in trying to figure this slowness out that I was trying 
turning off the check-all-folders option as well as in trying the next 
version of Evolution.

Thanks!