После обновления в firefox 19 случилось жесточайшее шг:
http://ompldr.org/vaHhrbg/2013-03-30_1366x768.png
Если вкратце: часть строк делается жирнее, эффект проявляется только после скроллинга. Изменение шрифтов страницами запрещено.
fontconfig:
[1] 10-autohint.conf
[2] 10-no-sub-pixel.conf
[3] 10-sub-pixel-bgr.conf
[4] 10-sub-pixel-rgb.conf
[5] 10-sub-pixel-vbgr.conf
[6] 10-sub-pixel-vrgb.conf
[7] 10-unhinted.conf
[8] 11-lcdfilter-default.conf *
[9] 11-lcdfilter-legacy.conf
[10] 11-lcdfilter-light.conf
[11] 20-unhint-small-dejavu-sans.conf
[12] 20-unhint-small-dejavu-sans-mono.conf
[13] 20-unhint-small-dejavu-serif.conf
[14] 20-unhint-small-vera.conf *
[15] 25-ttf-arphic-ukai-render.conf
[16] 25-ttf-arphic-uming-bitmaps.conf
[17] 25-ttf-arphic-uming-render.conf
[18] 25-unhint-nonlatin.conf
[19] 30-metric-aliases.conf
[20] 30-urw-aliases.conf
[21] 35-ttf-arphic-ukai-aliases.conf
[22] 35-ttf-arphic-uming-aliases.conf
[23] 40-nonlatin.conf *
[24] 41-ttf-arphic-ukai.conf
[25] 41-ttf-arphic-uming.conf
[26] 42-luxi-mono.conf *
[27] 45-latin.conf *
[28] 49-sansserif.conf *
[29] 50-user.conf
[30] 51-local.conf *
[31] 52-infinality.conf *
[32] 57-dejavu-sans.conf
[33] 57-dejavu-sans-mono.conf
[34] 57-dejavu-serif.conf
[35] 58-corefonts.conf *
[36] 59-google-droid-sans.conf
[37] 59-google-droid-sans-mono.conf
[38] 59-google-droid-serif.conf
[39] 60-latin.conf *
[40] 60-liberation.conf
[41] 62-croscore-arimo.conf
[42] 62-croscore-cousine.conf
[43] 62-croscore-symbolneu.conf
[44] 62-croscore-tinos.conf
[45] 64-ttf-arphic-uming.conf
[46] 65-fonts-persian.conf *
[47] 65-khmer.conf
[48] 65-nonlatin.conf *
[49] 66-lohit-assamese.conf
[50] 66-lohit-bengali.conf
[51] 66-lohit-gujarati.conf
[52] 66-lohit-hindi.conf
[53] 66-lohit-kannada.conf
[54] 66-lohit-kashmiri@devanagari.conf
[55] 66-lohit-konkani.conf
[56] 66-lohit-maithili.conf
[57] 66-lohit-marathi.conf
[58] 66-lohit-oriya.conf
[59] 66-lohit-punjabi.conf
[60] 66-lohit-sindhi@devanagari.conf
[61] 66-lohit-tamil.conf
[62] 66-lohit-telugu.conf
[63] 67-lohit-malayalam.conf
[64] 67-lohit-nepali.conf
[65] 69-unifont.conf *
[66] 70-no-bitmaps.conf
[67] 70-yes-bitmaps.conf *
[68] 75-ttf-arphic-ukai-select.conf
[69] 80-delicious.conf *
[70] 80-trebuchet.conf
[71] 90-synthetic.conf *
[72] 90-ttf-arphic-ukai-embolden.conf
[73] 90-ttf-arphic-uming-embolden.conf
[74] 99pdftoopvp.conf