XOrg breezy package

Hello,

I have a problem with breezy. After upgrading something got wrong and my 
actual display (the area on the monitor screen that actually shows 
something) shrinked. Although Xorg.0.log said it still was 320x240 
("(--) I810(0): Display dimensions: (320, 240) mm"), it was around 
290x240. Also Xorg.0.log didn't gave any other clues for such a 
behaviour (nothing was failing).
I have a i865G chipset (i810 driver) and SyncMaster 765mb monitor.

I tried another card (Radeon 7000, ati driver) on the same machine and 
it was OK (actual 320x240 display dimensions)

I think the problem is somehow connected with Xorg drivers. However as I 
'm don't know much about packaging, I have failed to find correspondent 
differences between hoary and breezy xorg* packages.

Could you give me any tips or suggestions?

Thank You,
Maksim.