i've made: pacman-optimize
and then: pacman -Syu

and it started to output me this error:

:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
:: Starting full system upgrade...
resolving dependencies...
error: could not open file /var/lib/pacman/local/abiword-plugins-2.6.4-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/acpid-1.0.6-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/akonadi-1.0.0-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/alsa-oss-1.0.17-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/anjuta-2.4.2-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/antlr-2.7.7-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/apr-1.3.2-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/argouml-0.26-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/at-spi-1.22.1-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/attr-2.4.41-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/awesome-2.3.4-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/b43-fwcutter-011-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/bigreqsproto-1.0.2-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/bin2iso-1.9b-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/bison-2.3-4/depends: No such file or directory
error: could not open file /var/lib/pacman/local/boo-0.8.2.2960-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/brasero-0.8.2-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/bug-buddy-2.22.0-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/bzip2-1.0.5-3/depends: No such file or directory
error: could not open file /var/lib/pacman/local/cairo-dock-themes-svn-1349-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/cdparanoia-10.2-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/checkgmail-1.13-3/depends: No such file or directory
error: could not open file /var/lib/pacman/local/clisp-2.45-3/depends: No such file or directory
error: could not open file /var/lib/pacman/local/clucene-0.9.20-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/cmatrix-1.2a-3/depends: No such file or directory
error: could not open file /var/lib/pacman/local/codecs-20071007-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/compiz-decorator-gtk-0.7.8-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/compositeproto-0.4-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/confuse-2.6-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/cpudyn-1.0.1-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/cpufreqd-2.3.3-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/cracklib-2.8.13-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/crypto++-5.5.2-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/csup-20060318-5/depends: No such file or directory
error: could not open file /var/lib/pacman/local/curl-7.19.0-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/darkstat-3.0.708-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/db4.1-4.1.25-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/db4.5-4.5.20-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/dbus-qt3-0.62-3/depends: No such file or directory
error: could not open file /var/lib/pacman/local/devede-3.11b-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/devhelp-0.19.1-2/depends: No such file or directory
error: could not open file /var/lib/pacman/local/dia-0.96.1-1/depends: No such file or directory
error: could not open file /var/lib/pacman/local/dosbox-0.72-4/depends: No such file or directory

(and the list goes on)

and i try to cd one of the paths errors, and:

~ # cd /var/lib/pacman/local/acpid-1.0.6-1/depend
bash: cd: /var/lib/pacman/local/acpid-1.0.6-1/depend: No such file or directory

i've already tried: pacman -Scc and then pacman -Syy. but the error pressists.

does anyone knows how to solve this error?