Windows placement and keyboard shortcuts problem

Hi, when i logged in today in my fedora 17 x86_64 installation (uname -r: 3.7.6-102.fc17.x86_64), i noticed two abnormal things: 1. My keyboard shortcuts weren't working anymore. For example, my <CTRL><ALT><L> that supposedly would lock the screen, didn't do anything at all, and my <CTRL><ALT><DEL> that would give me, supposedly, the log out screen, didn't do anything either. 2. The windows wouldn't be placed in the right place when started. In other words, they wouldn't comply with my option "By default, place windows: at the center of the screen" in settings>settings manager>window manager tweaks>placement. In the same window, i also have the cursor pushed all the way to Large in the "minimum size of windows to trigger smart placement" option. Now, since i am almost sure that yesterday none of this was happening, i did the following: $rpm -qa --last | more ModemManager-0.6.0.0-3.fc17 Mon 18 Feb 2013 11:16:52 dnsmasq-2.65-4.fc17 Mon 18 Feb 2013 11:16:51 phonon-backend-gstreamer-4.6.3-1.fc17 Mon 18 Feb 2013 11:16:50 xkeyboard-config-2.5.1-4.fc17 Mon 18 Feb 2013 11:16:49 xorg-x11-drv-synaptics-1.6.3-1.fc17 Mon 18 Feb 2013 11:16:47 mtdev-1.1.3-1.fc17 Mon 18 Feb 2013 11:16:45 Regarding the shortcuts (point 1), can i say that the xkeyboard-config is the culprit? Or is my assumption completely wrong? (With xev i was able to confirm that the keys are being correctly interpreted) Regarding point 2, after playing around, i saw that if i go to settings>settings manager>window manager tweaks>placement and push the cursor all the way to "Small" and then again all the way to "Large", the windows wouldn't start where i want them again, which is at the center of the screen. Is someone else seeing the same thing? Should i fill a bug? If so, against what? Thanks for any input.