The problem is that the same font renders differently in Sublime Text and in system.
In both Leafpad and Sublime text Ubuntu Mono 12 is used. Leafpad displays the fonts correctly as well as Vim in LXterminal and LXterminal itself...
As for fontconfig:
extra/fontconfig 2.10.1-2
local/fontconfig-infinality 1-20120615
local/freetype2-infinality 2.4.10-1
extra/cairo 1.12.2-2
extra/libxft 2.3.1-1
Update: Don't use 2) infinality preset, use 3) linux.
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