The addrbook/addrbook-00000?.xml file remains in the file system after its corresponding address book is deleted in Claws Mail.
Changes related to this bug have been committed. Please check latest CVS and update the bug accordingly. You can also get the patch from: http://www.colino.net/claws-mail/ 2011-11-28 [pawel] 3.7.10cvs106 * src/addrbook.c * src/addrbook.h * src/addressbook.c Fix bug #2177 'addrbook/addrbook-00000?.xml is not deleted after removing the address book in the GUI'