Created attachment 339342 [details] emerge-pqv results start kmail ,obtains the headers for mail,then stops with the message kmail failed to obtain a lock. I am using an imap server to get my mail from. version of kmail 4.10.0
Please report this issue upstream and then paste the link here.
314587 is the No. of the kde bug report
According to upstream, this issue is definitely fixed by using non-broken version of OpenSSL and restarting all consumers. (eg outout of lsof | grep deleted)