[avodonosov]

Updated driver. The text is still rendered the same - zigzags instead of lines.

Now about:support shows

  Graphics

  Adapter Description	NVIDIA GeForce GT 230M
  Adapter Drivers	nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
  Adapter RAM	1024
  ClearType Parameters	DISPLAY1 [ Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 200 ] DISPLAY2 [ Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 200 ]
  Device ID	0x0a28
  Direct2D Enabled	true
  DirectWrite Enabled	true (6.2.9200.16571)
  Driver Date	12-19-2013
  Driver Version	9.18.13.3221
  GPU #2 Active	false
  GPU Accelerated Windows	1/1 Direct3D 10
  Vendor ID	0x10de
  WebGL Renderer	Google Inc. -- ANGLE (NVIDIA GeForce GT 230M Direct3D9Ex vs_3_0 ps_3_0)
  windowLayerManagerRemote	false
  AzureCanvasBackend	direct2d
  AzureContentBackend	direct2d
  AzureFallbackCanvasBackend	cairo
  AzureSkiaAccelerated	0

So, DirectWrite is on now.

[avodonosov]

A commenter in my blog suggested to ensure ClearType is enablied in Windows settings - and indeed, I found ClearType disabled. After enabling ClearType the fonts look good in FF and Chrome.

The commenter explained that "IE uses it's own version of Cleartype regardless of system settings, while Firefox and Chrome correctly adhere to your system settings."