Hello,
I'm tested it in Beta1, but had no problem with it.
I don't know whats going wrong, but it happened with beta1, too. I enabled all debugging options and this is what the logfile says:
dovecot: Jan 20 18:26:07 Info: Dovecot v1.0.beta1 starting up dovecot: Jan 20 18:26:08 Info: auth(default): passwd-file /mailin/mailboxes/conf/pop3-auth.txt: Read 3 users dovecot: Jan 20 18:26:47 Info: auth(default): client in: AUTH 1 PLAIN service=POP3 secured lip=192.168.33.72 rip=192.168.33.72 resp=AGltYXB0ZXN0QHZhcmlvbWVkaWEuZGUAdGVzdA== dovecot: Jan 20 18:26:47 Info: auth(default): passwd-file /mailin/mailboxes/conf/pop3-auth.txt: Read 3 users dovecot: Jan 20 18:26:47 Info: auth(default): client out: OK 1 user=try@test.de dovecot: Jan 20 18:26:47 Info: auth(default): master in: REQUEST 1 30065 1 dovecot: Jan 20 18:26:47 Info: auth(default): master out: USER 1 try@test.de uid=99 gid=99 home=/mailin/mailboxes/t/te/test.de/_/try dovecot: Jan 20 18:26:47 Info: pop3(try@test.de): Effective uid=99, gid=99 dovecot: Jan 20 18:26:47 Info: pop3(try@test.de): maildir: data=/mailin/mailboxes/t/te/test.de/_/try/Maildir:INDEX=MEMORY dovecot: Jan 20 18:26:47 Info: pop3(try@test.de): maildir: root=/mailin/mailboxes/t/te/test.de/_/try/Maildir, index=, control=, inbox= dovecot: Jan 20 18:26:47 Error: pop3(try@test.de): file mail-index-lock.c: line 252 (mail_index_copy): assertion failed: (!MAIL_INDEX_IS_IN_MEMORY(index)) dovecot: Jan 20 18:26:47 Info: pop3-login: Login: user=try@test.de, method=PLAIN, rip=192.168.33.72, lip=192.168.33.72, TLS dovecot: Jan 20 18:26:47 Error: child 30072 (pop3) killed with signal 6
Did you test with dotlock and did you remove your existing index-files?
Regards Marten