[Evolution] UID clashes in IMAP folder

[michael lausch <mla 1012surf net>]

I'm currently (well for 2 weeks actually) experiencing UID 
clashes for my IMAP INBOX. I traced all the e-msgport and mail-mt
calls and i found the following call scenario:

Thread         called functions
21888   calls  mail_msg_received -> timeout_timeout
21887   calls  mail_msg_received -> regen_list_regen
21887   return mail_msg_received

UID CLASHES IN 21888 HAPPENS HERE

21888   return mail_msg_received
21911   calls  mail_msg_received
21911   return mail_msg_received

i don't know if it's save for two threads to enter mail_msg_received 
at the same time. but if it isn't this seems to tbe the reason
why.