[allan87]

@popcornmix
Following that note - is it safe to say that for Model B we should be using gpu_mem_512=256 on a normal basis?
thanks for clarifying it

No, 128M is the recommended value. There are some circumstances where this isn't enough, so if you are having problems, then increasing this value is a useful test point...

256M was the stock setting in the config.txt file of my first install, and I was not aware that it was not optimal. What are the disadvantages of 256? I have checked available CPU memory from time to time and always found plenty of free RAM. Would a setting somewhere in between 128 and 256 make sense (especially if one is running test builds)?