Bugzilla Bug 273109

After upgrading:
Mon Apr 27 15:33:57 2009 >>> media-sound/amarok-2.0.2-r3
Sun Jun  7 18:39:47 2009 >>> media-sound/amarok-utils-2.1
Sun Jun  7 18:55:34 2009 >>> media-sound/amarok-2.1

Now my local collection has no artist info any more. Track details are empty.

Portage 2.2_rc33 (default/linux/x86/2008.0/desktop, gcc-4.3.3, glibc-2.10.1-r0,
2.6.30-rc6 i686)
=================================================================
System uname:
Linux-2.6.30-rc6-i686-Intel-R-_Core-TM-_i7_CPU_920_@_2.67GHz-with-gentoo-2.0.1
Timestamp of tree: Unknown
distcc 3.1 i686-pc-linux-gnu [disabled]
ccache version 2.4 [enabled]
app-shells/bash:     4.0_p24
dev-java/java-config: 1.3.7-r1, 2.1.8
dev-lang/python:     2.4.4-r15, 2.5.4-r2, 2.6.2-r1
dev-util/ccache:     2.4-r8
dev-util/cmake:      2.6.4
sys-apps/baselayout: 2.0.1
sys-apps/openrc:     0.4.3-r2
sys-apps/sandbox:    2.0
sys-devel/autoconf:  2.13, 2.63-r1
sys-devel/automake:  1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2, 1.11
sys-devel/binutils:  2.19.1-r1
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6a
virtual/os-headers:  2.6.29
ACCEPT_KEYWORDS="x86 ~x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=native -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /opt/openjms/config /usr/kde/3.5/env
/usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/
/etc/eselect/postgresql /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release
/etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/
/etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/splash
/etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d
/etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d"
CXXFLAGS="-O2 -march=native -pipe -fomit-frame-pointer"
DISTDIR="/var/distfiles"
FEATURES="ccache collision-protect distlocks fixpackages parallel-fetch
preserve-libs protect-owned sandbox sfperms sign strict unmerge-orphans
userfetch userpriv usersandbox verify-rdepend"
GENTOO_MIRRORS=" http://trumpetti.atm.tut.fi/gentoo"
LANG="en_US.utf8"
LC_ALL="en_US.utf8"
LDFLAGS="-Wl,--as-needed -Wl,-O1"
LINGUAS="fi en"
MAKEOPTS="-j8"
PKGDIR="/home/pkg/"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --stats --timeout=180 --exclude=/distfiles
--exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/mnt/checkouts/overlays/flameeyes-overlay
/mnt/checkouts/overlays/openrc /mnt/checkouts/overlays/sunrise
/mnt/checkouts/overlays/wschlich-testing /mnt/checkouts/overlays/finnish
/mnt/checkouts/overlays/jokey"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="a52 aac acl acpi alsa audiofile bash-completion bluetooth branding bzip2
cairo caps cdb cddb cdparanoia cdr cli cracklib crypt cups custom-cxxflags dbus
dri dts dvd dvdr dvdread emboss evo fam ffmpeg firefox gif glib hal iconv ipv6
isdnlog java jpeg kde kdeenablefinal kdehiddenvisibility libnotify
logitech-mouse mad mikmod mjpeg mmx mp3 mp4 mpeg mudflap ncurses network nptl
nptlonly nsplugin nvidia offensive ogg opengl openmp pam pcre pdf png ppds pppd
pulseaudio qt3 qt3support quicktime readline reflection rtc samba session spell
spl sse sse2 ssl ssse3 startup-notification subversion svg symlink sysfs theora
threads tiff truetype udev unicode usb userlocales vim-syntax vorbis
win32codecs x86 xcb xcomposite xinerama xml xorg xulrunner xv xvid xvmc zlib"
ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare
dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter
mmap_emul mulaw multi null plug rate route share shm softvol"
APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm
authn_default authn_file authz_dbm authz_default authz_groupfile authz_host
authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir
disk_cache env expires ext_filter file_cache filter headers include info
log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling
status unique_id userdir usertrack vhost_alias" ELIBC="glibc"
INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk
hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="fi en" USERLAND="GNU"
VIDEO_CARDS="none nvidia"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK,
PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Betelgeuse and Civil from #gentoo-kde both confirmed that removing the database
and having amarok rebuild the collection fixes this issue.
I'm poking upstream to determine whether there was an incompatible change to
the collection from 2.0.2 to 2.1 that would explain this.
I haven't personally hit this issue, but I switched back and forth 2.0.2 and
2.0.96 a few times and then finally upgraded from 2.0.96 to 2.1.

Seems like this issue has been reported upstream -
https://bugs.kde.org/show_bug.cgi?id=196257

according to upstream bug this is fixed in 2.2