Bug#440067:

Still a problem sixteen years later!

Bug#515155: IW text resizing is incredibly slow

Package: iceweasel i have been experiencing terribly poky text resizing since before FF3. the xulrunner-stub process takes 100% of CPU for seconds when i increase the font size of even a short web page. a similar delay seems to accompany opening and closing tabs. MOZ_DISABLE_PANGO=1 does not