I can confirm this bug, too. KMail version 4:3.5.6-0ubuntu6 on Ubuntu Feisty.
Mails are fetched from a POP3 server - hence not a protocol issue. The KMail configuration and Emails were imported from a previous Ubuntu version (Dapper). Perhaps its regarded with the import of the old configuration files and emails? Any ideas? -- [Data Loss] KMail mysteriously changes messages to "No Subject", "Unknown" sender https://bugs.launchpad.net/bugs/50039 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs