Comment 1 for bug 1351597

I'm currently updating some libraries for Inkscape on win32, and notice a serious UI slowdown when updating the Cairo libs. Everything works as expected with Cairo-1.11.2 (the dll we provide with the latest stable Inkscape version, 0.48.4), but the Inkscape UI becomes very slow when drawing or moving objects on canvas with a more recent Cairo version (tested with 1.12.0, 1.12.8, 1.12.14, 1.12.16 and yesterdays git version). I've also updated Pixman to 0.32.4, but noticed no regression with the Pixman update as long as I don't update Cairo too.
I've tried with different compilers (TDM-GCC-4.5, TDM-GCC-4.6 and TDM-GCC-4.8.1) with no difference.

Other operating systems are not affected (tested on Debian stable with Cairo-1.12.2 and Pixman-0.26, but other Inkscape users confirmed it's ok with recent Ubuntu and OS-X versions).