[imp] index error on folders

[shannon@flyingmug.com]

When I click on the folder button I get this error.  Sometimes if i click on 
the folder button again it will go into the normal folder view without these 
errors on top of the normal page.  Any ideas.  

Horde 2.0, Imp 3.0, turba 1.0, redhat 7.2, imap200c

Warning: Undefined index: attributes 
in /var/www/html/mail/horde/imp/lib/Tree.php on line 689

Warning: Undefined index: {localhost:143/imap}mail-may-2002 
in /var/www/html/mail/horde/imp/lib/Tree.php on line 652

Warning: Undefined index: {localhost:143/imap}maildrafts 
in /var/www/html/mail/horde/imp/lib/Tree.php on line 652

Warning: Undefined index: {localhost:143/imap}mailsent- 
in /var/www/html/mail/horde/imp/lib/Tree.php on line 652

Warning: Undefined index: {localhost:143/imap}mailsent--jun-2002 
in /var/www/html/mail/horde/imp/lib/Tree.php on line 652

Warning: Undefined index: {localhost:143/imap}mailtrash 
in /var/www/html/mail/horde/imp/lib/Tree.php on line 652

Thanks.