I've just set ssl_pop=0 to all of my POP3 accounts in ~/.claws-mail/accountrc. Thus for me claws-mail is working again, of course without ssl support. My wild guess is, the bug is somehow related to the recent upgrade from libgcrypt11 1.4.6-9 to 1.5.0-3.
Before that claws-mails handling of POP3 SSL was working fine. Markus
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