font problems in firefox, thunderbird,.. gtk?

[Jan Zach]

Hi,

after system and ports upgrade I have problems with fonts in some apps - firefox, thunderbird, gthumb, liferea and so on. It is probably related to the underlying toolkit - gtk2?
The problem is that sometimes (not regularly) the app system fonts are not that expected ones but they are proportional and blurred - almost unreadable. Usually it helps to restart the app, sometimes more than once. I was searching the Internet, experimenting with xorg.conf and installed fonts, font cache etc. but got no results. With my previous installation I have had similar problems but really seldom not on regular basis as now.
I will appreciate any help it is really annoying
Thanks,
jan

my apps versions:
FreeBSD golem 6.2-RELEASE-p2 FreeBSD 6.2-RELEASE-p2
xorg-6.9.0
windowmaker-0.92.0_2
gtk-1.2.10_17
gtk-2.10.9_1
firefox-2.0.0.2,1
thunderbird-1.5.0.10

xorg.conf snippet
-----------------------
    Load        "type1"
    Load        "speedo"
    Load        "freetype"
    Load        "xtt"
    Load        "glx"
    Load        "dri"
    Load        "record"
    Load        "extmod"
    Load        "drm"
    Load        "xtrap"

Section "Files"
    ModulePath "/usr/X11R6/lib/modules"
    RgbPath    "/usr/X11R6/lib/X11/rgb"

    FontPath   "/usr/X11R6/lib/X11/fonts/TrueType/"
    FontPath   "/usr/X11R6/lib/X11/fonts/freefont/"
    FontPath   "/usr/X11R6/lib/X11/fonts/freefont-ttf/"
    FontPath   "/usr/X11R6/lib/X11/fonts/webfonts/"
    FontPath   "/usr/X11R6/lib/X11/fonts/local/"
    FontPath   "/usr/X11R6/lib/X11/fonts/misc/"
    FontPath   "/usr/X11R6/lib/X11/fonts/Type1/"
    FontPath   "/usr/X11R6/lib/X11/fonts/CID/"
    FontPath   "/usr/X11R6/lib/X11/fonts/Speedo/"
    FontPath   "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
    FontPath   "/usr/X11R6/lib/X11/fonts/75dpi/"
    FontPath   "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
    FontPath   "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection