[SOLVED] Обновление qt до qt 4.5.0_rc1

Здравствуйте, уважаемые!

При очередном emerge -avuDN world возникла вот такая проблема:

Calculating dependencies... done!
...
[ebuild U ] x11-libs/qt-core-4.5.0_rc1 [4.4.2-r2] USE="glib qt3support ssl -custom-cxxflags -debug -doc -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-sql-4.5.0_rc1 [4.4.2] USE="mysql qt3support sqlite -custom-cxxflags -debug -firebird -odbc -pch -postgres" 0 kB [0]
[ebuild U ] x11-libs/qt-script-4.5.0_rc1 [4.4.2] USE="-custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-test-4.5.0_rc1 [4.4.2] USE="-custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-dbus-4.5.0_rc1 [4.4.2] USE="-custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-xmlpatterns-4.5.0_rc1 [4.4.2] USE="-custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-gui-4.5.0_rc1-r1 [4.4.2-r3] USE="accessibility cups dbus glib gtkstyle%* qt3support tiff -custom-cxxflags -debug -mng -nas -nis -pch -raster% -xinerama" INPUT_DEVICES="(-wacom%)" 0 kB [0]
[ebuild U ] x11-libs/qt-qt3support-4.5.0_rc1 [4.4.2] USE="accessibility -custom-cxxflags -debug -pch -phonon%" 0 kB [0]
[ebuild U ] x11-libs/qt-webkit-4.5.0_rc1 [4.4.2] USE="-custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-svg-4.5.0_rc1 [4.4.2] USE="-custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-opengl-4.5.0_rc1 [4.4.2] USE="qt3support -custom-cxxflags -debug -pch" 0 kB [0]
[ebuild U ] x11-libs/qt-assistant-4.5.0_rc1 [4.4.2-r1] USE="-custom-cxxflags -debug -pch (-webkit%*)" 0 kB [0]
[ebuild U ] x11-libs/qt-4.5.0_rc1 [4.4.2] USE="dbus opengl qt3support -phonon%" 0 kB [0]

!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

x11-libs/qt-script:4

('ebuild', '/', 'x11-libs/qt-script-4.5.0_rc1', 'merge') pulled in by
~x11-libs/qt-script-4.5.0_rc1[-debug] required by ('ebuild', '/', 'x11-libs/qt-gui-4.5.0_rc1-r1', 'merge')
~x11-libs/qt-script-4.5.0_rc1 required by ('ebuild', '/', 'x11-libs/qt-4.5.0_rc1', 'merge')
(and 433 more)

('installed', '/', 'x11-libs/qt-script-4.4.2', 'nomerge') pulled in by
~x11-libs/qt-script-4.4.2 required by ('installed', '/', 'x11-libs/qt-gui-4.4.2-r3', 'nomerge')
(and 433 more)

x11-libs/qt-core:4

('installed', '/', 'x11-libs/qt-core-4.4.2-r2', 'nomerge') pulled in by
~x11-libs/qt-core-4.4.2 required by ('installed', '/', 'x11-libs/qt-dbus-4.4.2', 'nomerge')
~x11-libs/qt-core-4.4.2 required by ('installed', '/', 'x11-libs/qt-qt3support-4.4.2', 'nomerge')
~x11-libs/qt-core-4.4.2 required by ('installed', '/', 'x11-libs/qt-script-4.4.2', 'nomerge')
(and 443 more)

('ebuild', '/', 'x11-libs/qt-core-4.5.0_rc1', 'merge') pulled in by
~x11-libs/qt-core-4.5.0_rc1[qt3support,-debug] required by ('ebuild', '/', 'x11-libs/qt-sql-4.5.0_rc1', 'merge')
~x11-libs/qt-core-4.5.0_rc1[glib,qt3support,-debug] required by ('ebuild', '/', 'x11-libs/qt-gui-4.5.0_rc1-r1', 'merge')
~x11-libs/qt-core-4.5.0_rc1[-debug] required by ('ebuild', '/', 'x11-libs/qt-script-4.5.0_rc1', 'merge')
(and 448 more)

и в том же духе.

Причем, обновляться до 4.5.0_rc1 желания особо никакого нет, начитавшись про глюки с ними.
Но и сделать так, чтоб emerge при обновлении мира не пытался их обновить - тоже не вышло. Пытался их замаскировать через package.mask, но тогда ругается вот так вот:

!!! All ebuilds that could satisfy "~x11-libs/qt-webkit-4.5.0_rc1" have been masked.
!!! One of the following masked packages is required to complete your request:
- x11-libs/qt-webkit-4.5.0_rc1 (masked by: package.mask)

For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.
(dependency required by "x11-libs/qt-4.5.0_rc1" [ebuild])
(dependency required by "@world" [argument])

Хотя не могу понять, почему ругается - не могу.

death ~ # grep "qt" /var/lib/portage/world
x11-libs/qt-core:4
x11-libs/qt-gui:4
x11-libs/qt:4

пробовал удалять эти строки, ошибка остается та же... Чему в мире нужная новая версия qt - загадка...

Буду признателен за любые идеи - как с этим бороться :)