So moved to Win8, lightroom is fine but Nik Color Efex is doing funny stuff: with GPU off it is increeedible slow (bizarre since i´m running i7 at 4.7Ghz 16gb ram, 256SSD) and with Gpu on everytime the mouse hovers over a control, it dissapears! something is going on with the refresh....
Dunno if it is my GPU or NIK running on win8 64bit...
Anyone has more experiences with win 8 and Nik Color Efex 4??