As requested, I'm appending the Valgrind log. Crash ocurred while still choosing File -> Exit on Rhythmbox's menu; I never got the chance to actually press Exit.
Console output: ------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<-- ubuntu@lucid_amd64:~$ G_SLICE=always-malloc G_DEBUG=gc-friendly valgrind -v --tool=memcheck --leak-check=full --num-callers=40 --log- file=valgrind.log /usr/bin/rhythmbox (rhythmbox:21656): Rhythmbox-WARNING **: Could not open device /dev/radio0 ** (rhythmbox:21656): DEBUG: Loading the real store page ** (rhythmbox:21656): WARNING **: Error calling current_status: Message did not receive a reply (timeout by message bus) ** (rhythmbox:21656): WARNING **: Could not connect to Ubuntu One: Message did not receive a reply (timeout by message bus) liboauth: data to sign='GET&https%3A%2F%2Fone.ubuntu.com%2Fmusic%2Flogin&oauth_callback%3DNone%26oauth_consumer_key%3Dubuntuone%26oauth_nonce%3DXXXXXXXXXXXXXXXXXXXXXXXXXXXX%26oauth_signature_method %3DHMAC- SHA1%26oauth_timestamp%3DXXXXXXXXXX%26oauth_token%3DXXXXXXXXXXXXXXXXXXXX%26oauth_verifier%3DNone%26oauth_version%3D1.0' liboauth: key='hammertime&XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' ** (rhythmbox:21656): DEBUG: navigation requested to https://one.ubuntu.com/music/login?oauth_callback=None&oauth_consumer_key=ubuntuone&oauth_nonce=XXXXXXXXXXXXXXXXXXXXXXXXXXXX&oauth_signature_method =HMAC- SHA1&oauth_timestamp=XXXXXXXXXX&oauth_token=XXXXXXXXXXXXXXXXXXXX&oauth_verifier=None&oauth_version=1.0&oauth_signature=XXXXXXXXXXXXXXXXXXXXXXXXXXX%3D (rhythmbox:21656): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer (rhythmbox:21656): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (rhythmbox:21656): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer (rhythmbox:21656): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (rhythmbox:21656): Rhythmbox-CRITICAL **: rb_property_view_set_selection: assertion `RB_IS_PROPERTY_VIEW (view)' failed (rhythmbox:21656): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer (rhythmbox:21656): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (rhythmbox:21656): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer (rhythmbox:21656): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (rhythmbox:21656): Rhythmbox-CRITICAL **: rb_property_view_set_selection: assertion `RB_IS_PROPERTY_VIEW (view)' failed (rhythmbox:21656): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer (rhythmbox:21656): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (rhythmbox:21656): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer (rhythmbox:21656): GLib-GObject-CRITICAL **: g_signal_handlers_unblock_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed (rhythmbox:21656): Rhythmbox-CRITICAL **: rb_property_view_set_selection: assertion `RB_IS_PROPERTY_VIEW (view)' failed Morto ubuntu@lucid_amd64:~$ dir valgrind.log -rw------- 1 ubuntu ubuntu 8,6M 2011-12-01 22:30 valgrind.log ------>8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-------->8-- ** Attachment added: "Bzip2'd Valgrind run log." https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/897917/+attachment/2615184/+files/valgrind_rhythmbox.log.bz2 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to rhythmbox in Ubuntu. https://bugs.launchpad.net/bugs/897917 Title: rhythmbox-metadata assert failure: *** glibc detected *** /usr/lib/rhythmbox/rhythmbox-metadata: malloc(): memory corruption: 0x00007f3310002330 *** Status in “rhythmbox” package in Ubuntu: Incomplete Bug description: Rhythmbox crashes on exit. ProblemType: Crash DistroRelease: Ubuntu 10.04 Package: rhythmbox 0.12.8-0ubuntu7 ProcVersionSignature: Ubuntu 2.6.32-35.78-generic 2.6.32.46+drm33.20 Uname: Linux 2.6.32-35-generic x86_64 NonfreeKernelModules: nvidia Architecture: amd64 AssertionMessage: *** glibc detected *** /usr/lib/rhythmbox/rhythmbox-metadata: malloc(): memory corruption: 0x00007f3310002330 *** Date: Tue Nov 29 22:56:11 2011 ExecutablePath: /usr/lib/rhythmbox/rhythmbox-metadata InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) ProcCmdline: /usr/lib/rhythmbox/rhythmbox-metadata unix:tmpdir=/tmp ProcEnviron: SHELL=/bin/bash PATH=(custom, user) LANG=pt_PT.utf8 LANGUAGE=pt:pt_PT:pt_BR:en Signal: 6 SourcePackage: rhythmbox StacktraceTop: *__GI_raise (sig=<value optimized out>) *__GI_abort () at abort.c:92 __libc_message (do_abort=<value optimized out>, malloc_printerr (action=3, _int_malloc (av=0x7f3310000020, bytes=100) Title: rhythmbox-metadata assert failure: *** glibc detected *** /usr/lib/rhythmbox/rhythmbox-metadata: malloc(): memory corruption: 0x00007f3310002330 *** UserGroups: adm admin android audio backup boinc cdrom clhep dba devel dialout dip fax floppy fuse jboss jetty libvirtd lp lpadmin netdev pkcs11 plugdev polkituser sambashare saned scard science smsd tape tomcat6 video wireshark To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/897917/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp