blurred fonts

[julius Junghans]

Hi,

every second line in apps like thunderbird, firefox, konsole and kopete 
the font looks blurred - tried several fonts.
somebody from the freetype mailing list suggested that the vertical line 
pitch might be wrong.

found a formula on this site: 
http://gentoo-wiki.com/HOWTO_Xorg_and_Fonts to calculate the 
widht/height from my tft (samsung x20)

...E.g. to use a dpi of 75 with a resolution of 1600x1200, the 
calculation would be 25.4 * 1600 / 75 = 542 and 25.4 * 1200 / 75 = 406, 
resulting in the setting DisplaySize 542 406....

my tft is using 1400x1050, and should be:

widht 474.13        used 474
hight 355.6           used 356

the log says:
(II) I810(0): My Monitor: Using hsync range of 60.00-66.32 kHz
(II) I810(0): My Monitor: Using vrefresh value of 60.00 Hz
(II) I810(0): Not using mode "1400x1050" (no mode of this name)
(--) I810(0): Virtual size is 1280x1024 (pitch 1280)
(**) I810(0):  Built-in mode "1280x1024"
(**) I810(0): Display dimensions: (474, 356) mm
(**) I810(0): DPI set to (68, 73)

^- cant find these lines without using the DisplaySize parameter.

got no font problems with xorg-6.8.2 and i810 from cvs (20050716), used 
855resolution to get 1400x1050

someone with the same problem made a screenshot, take a look at the konsole:
http://www.pcbsd.org/forums/viewtopic.php?t=1885

any suggestions?
greets
Julius