Andrew's Crash report proved to be more useful.

--- stack trace ---
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
Core was generated by `/usr/lib/gamin/gam_server'.
Program terminated with signal 6, Aborted.
#0  0xffffe410 in __kernel_vsyscall ()
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7e1b760 in __open_catalog () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0xb7e1cee3 in __sigpause () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#3  0xb7f5b1a2 in IA__g_assert_warning (log_domain=0x0, file=0x4 <Address 0x4 
out of bounds>, line=-1208461024, 
    pretty_function=0x4 <Address 0x4 out of bounds>, expression=0x2 <Address 
0x2 out of bounds>) at gmessages.c:552
No locals.
#4  0xb7f5b1d9 in IA__g_assert_warning (log_domain=0x0, file=0x4 <Address 0x4 
out of bounds>, line=-1208461024, 
    pretty_function=0x805b920 "g list PERM\n", expression=0x805b940 "%s to 
missing list MISSING\n") at gmessages.c:561
No locals.
#5  0xb7f5b256 in IA__g_log_remove_handler (log_domain=0x0, 
handler_id=134591101) at gmessages.c:352
        domain = <value optimized out>
        __PRETTY_FUNCTION__ = "IA__g_log_remove_handler"
#6  0x0805466f in gam_inotify_remove_subscription (sub=0x8062bc0) at 
gam_inotify.c:875
        path = 0x8062e78 "/home/music/.Trash-andrew"
        data = (inotify_data_t *) 0x8062b68
        __PRETTY_FUNCTION__ = "gam_inotify_remove_subscription"
#7  0x0804bb07 in gam_kernel_remove_subscription (sub=0x8062bc0) at 
gam_server.c:445
No locals.
#8  0x0804b7fd in gam_remove_subscription (sub=0x8062bc0) at gam_server.c:249
        type = GFS_MT_KERNEL
        path = 0x8062e78 "/home/music/.Trash-andrew"
#9  0x08050b0c in gam_connection_request (conn=0x8063000, req=0x806301c) at 
gam_connection.c:387
        path = 0x8062d40 "/home/music/.Trash-andrew"
        pathlen = 25
        sub = (GamSubscription *) 0x8062bc0
        events = -1075177448
        is_dir = 1
        byte_save = 47 '/'
        type = 3
        options = 0
        __PRETTY_FUNCTION__ = "gam_connection_request"
        __FUNCTION__ = "gam_connection_request"
#10 0x08050f23 in gam_connection_data (conn=0x8063000, len=10) at 
gam_connection.c:490
        req = (GAMPacketPtr) 0x806301c
        __PRETTY_FUNCTION__ = "gam_connection_data"
        __FUNCTION__ = "gam_connection_data"
#11 0x0804f736 in gam_client_conn_read (source=0x8062fb8, condition=G_IO_IN, 
info=0x8063000) at gam_channel.c:270
        data = 0x806301c "\n"
        size = 4106
        fd = 2
        ret = 10
        conn = (GamConnDataPtr) 0x8063000
        __FUNCTION__ = "gam_client_conn_read"
#12 0xb7f7bd1d in g_io_unix_set_flags (channel=0x8062c50, flags=134542385, 
err=0x8063000) at giounix.c:377
        fcntl_flags = <value optimized out>
#13 0xb7f52872 in IA__g_main_context_dispatch (context=0x8061528) at 
gmain.c:2059
No locals.
#14 0xb7f5584f in g_main_context_iterate (context=0x8061528, block=1, 
dispatch=1, self=0x805e038) at gmain.c:2982
        got_ownership = <value optimized out>
        max_priority = 2147483647
        timeout = 32
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = (GPollFD *) 0x805e350
        __PRETTY_FUNCTION__ = "g_main_context_iterate"
#15 0xb7f55bf9 in IA__g_main_loop_run (loop=0x8062938) at gmain.c:2868
        got_ownership = <value optimized out>
        self = (GThread *) 0x805e038
        __PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#16 0x0804bf52 in main (argc=1, argv=0xbfea1a84) at gam_server.c:581
        loop = (GMainLoop *) 0x8062938
        i = -1075176968
        __FUNCTION__ = "main"
--- thread stack trace ---
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
Core was generated by `/usr/lib/gamin/gam_server'.
Program terminated with signal 6, Aborted.
#0  0xffffe410 in __kernel_vsyscall ()
.
Thread 1 (process 10081):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7e1b760 in __open_catalog () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0xb7e1cee3 in __sigpause () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#3  0xb7f5b1a2 in IA__g_assert_warning (log_domain=0x0, file=0x4 <Address 0x4 
out of bounds>, line=-1208461024, 
    pretty_function=0x4 <Address 0x4 out of bounds>, expression=0x2 <Address 
0x2 out of bounds>) at gmessages.c:552
No locals.
#4  0xb7f5b1d9 in IA__g_assert_warning (log_domain=0x0, file=0x4 <Address 0x4 
out of bounds>, line=-1208461024, 
    pretty_function=0x805b920 "g list PERM\n", expression=0x805b940 "%s to 
missing list MISSING\n") at gmessages.c:561
No locals.
#5  0xb7f5b256 in IA__g_log_remove_handler (log_domain=0x0, 
handler_id=134591101) at gmessages.c:352
        domain = <value optimized out>
        __PRETTY_FUNCTION__ = "IA__g_log_remove_handler"
#6  0x0805466f in gam_inotify_remove_subscription (sub=0x8062bc0) at 
gam_inotify.c:875
        path = 0x8062e78 "/home/music/.Trash-andrew"
        data = (inotify_data_t *) 0x8062b68
        __PRETTY_FUNCTION__ = "gam_inotify_remove_subscription"
#7  0x0804bb07 in gam_kernel_remove_subscription (sub=0x8062bc0) at 
gam_server.c:445
No locals.
#8  0x0804b7fd in gam_remove_subscription (sub=0x8062bc0) at gam_server.c:249
        type = GFS_MT_KERNEL
        path = 0x8062e78 "/home/music/.Trash-andrew"
#9  0x08050b0c in gam_connection_request (conn=0x8063000, req=0x806301c) at 
gam_connection.c:387
        path = 0x8062d40 "/home/music/.Trash-andrew"
        pathlen = 25
        sub = (GamSubscription *) 0x8062bc0
        events = -1075177448
        is_dir = 1
        byte_save = 47 '/'
        type = 3
        options = 0
        __PRETTY_FUNCTION__ = "gam_connection_request"
        __FUNCTION__ = "gam_connection_request"
#10 0x08050f23 in gam_connection_data (conn=0x8063000, len=10) at 
gam_connection.c:490
        req = (GAMPacketPtr) 0x806301c
        __PRETTY_FUNCTION__ = "gam_connection_data"
        __FUNCTION__ = "gam_connection_data"
#11 0x0804f736 in gam_client_conn_read (source=0x8062fb8, condition=G_IO_IN, 
info=0x8063000) at gam_channel.c:270
        data = 0x806301c "\n"
        size = 4106
        fd = 2
        ret = 10
        conn = (GamConnDataPtr) 0x8063000
        __FUNCTION__ = "gam_client_conn_read"
#12 0xb7f7bd1d in g_io_unix_set_flags (channel=0x8062c50, flags=134542385, 
err=0x8063000) at giounix.c:377
        fcntl_flags = <value optimized out>
#13 0xb7f52872 in IA__g_main_context_dispatch (context=0x8061528) at 
gmain.c:2059
No locals.
#14 0xb7f5584f in g_main_context_iterate (context=0x8061528, block=1, 
dispatch=1, self=0x805e038) at gmain.c:2982
        got_ownership = <value optimized out>
        max_priority = 2147483647
        timeout = 32
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = (GPollFD *) 0x805e350
        __PRETTY_FUNCTION__ = "g_main_context_iterate"
#15 0xb7f55bf9 in IA__g_main_loop_run (loop=0x8062938) at gmain.c:2868
        got_ownership = <value optimized out>
        self = (GThread *) 0x805e038
        __PRETTY_FUNCTION__ = "IA__g_main_loop_run"
#16 0x0804bf52 in main (argc=1, argv=0xbfea1a84) at gam_server.c:581
        loop = (GMainLoop *) 0x8062938
        i = -1075176968
        __FUNCTION__ = "main"


It's something about /home/music/.Trash-andrew, and trying so access something 
that's not there when removing an inode subscription. 

Somebody more clueful than I should decide if we can forward this to
upstream.

** Changed in: gamin (Ubuntu)
   Importance: Undecided => Medium
       Status: Unconfirmed => Confirmed

-- 
Crash when umounting an NFS share
https://launchpad.net/bugs/63476

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