I use cinnamon for a couple of weeks now and havent had any problems yet. Yesterday I reinstalled my system and since then i have some graphics issues. One of those is that some icons in my control panel look vertically squashed like this: 0_1510951572617_wifioƤ.png
Also in firefox the google search field goes black everytime I search something and when switching windows using Alt + Tab the preview window is just grey instead of showing the preview of the window. I already tried reinstalling the graphics driver wich didnt help.
I am using a thinkpad t430 with a core i5