That bug has been opened on https://launchpad.net/distros/ubuntu/+source/gnome-keyring/+bug/59812

"Using the Keyring manager, I found that I had a keyring called 'session'. I tried to delete it, got a message saying that it could not communicate with the GNOME keyring daemon, and then it crashed. A backtrace attachment is forthcoming.
...
http://librarian.launchpad.net/4213865/_usr_bin_gnome-keyring-daemon.1000.crash
...
 #1  0xb7e0b760 in *__GI_raise () from /lib/tls/i686/cmov/libc.so.6
 No locals.
 #2  0xb7e0cee3 in *__GI_abort () from /lib/tls/i686/cmov/libc.so.6
 No locals.
 #3  0xb7f541a2 in IA__g_logv (log_domain=<value optimized out>, 
     log_level=G_LOG_LEVEL_ERROR, 
     format=0xb7f7e920 "file %s: line %d (%s): assertion failed: (%s)", 
     args1=0xbffff12c "\027¯\005\bu\001") at gmessages.c:497
 	depth = <value optimized out>
 	domain = (GLogDomain *) 0x0
 	data = (gpointer) 0x0
 	log_func = (GLogFunc) 0xb7f54ab0 <IA__g_log_default_handler>
 	domain_fatal_mask = 5
 	test_level = <value optimized out>
 	was_recursion = 0
 	i = <value optimized out>
 #4  0xb7f541d9 in IA__g_log (log_domain=0x0, log_level=G_LOG_LEVEL_ERROR, 
     format=0xb7f7e920 "file %s: line %d (%s): assertion failed: (%s)")
     at gmessages.c:517
 	args = 0xbffff12c "\027¯\005\bu\001"
 #5  0xb7f54256 in IA__g_assert_warning (log_domain=0x0, 
     file=0x805af17 "gnome-keyring-daemon-file.c", line=373, 
     pretty_function=0x805afc4 "remove_keyring_file_from_disk", 
     expression=0x805af33 "keyring->file != NULL") at gmessages.c:552
 No locals.
 #6  0x080541cd in ?? ()
 No symbol table info available.
..."