Recently some annoying yellow boxes with content like "Optimized file format", "Includes transparency based on color opacity" and another 7 or more have popped up on my screen obscuring my work area. I have no idea where they came from or how to remove them.
They go away if I quit Photoshop but then appear again as I start working.
I'm working in Photoshop CS6.
Thanks Jeff. I was able to turn off Show tool tips and it seems to have worked.