MySQL problem

I have successfully compiled and installed Sendmail 8.2.19 + Cyrus Imap 2.1.9 + Cyrus SASL 2.1.7. I store users in sasl2.db. After all I decide store all users in MySQL, for this I recompile sasl2 with --with-mysql. Now when I try to authorize I get error: unable to dlopen /usr/lib/sasl2//li

can't delete

I have in imapd.conf: ... admins: vasili ... but when I logon with "vasili" and try to delete mailbox I get error "Permissions denied". Whats wrong?