After changing the resolution by editing the xorg.conf the system texts (menu, header, icon name etc.) become too small. However, the text size in Leafpad and Midori is fine. I tried changing values in openbox configuration but it did not really help since only header is only affected by the change. Is there a way to change the size of system text to normal?
Note that programs that run as root will use root's profile and thus font size; it will need to be changed by running the configuration program as root.