I solved this problem on my PS3 already ... and now my YDL 6.0 is running fine juz that having problem on setting 720p fullscreen on my dell 20" monitor
I initially tried to install ubuntu already but somehow has some problem so i go for format my PS3 HDD (Quick format) then before go for ubuntu, I tried my luck again on YDL and select keyboard "UK" and suprisingly everything is working. I do not have experience on linux, but my initial suspect is that when you select keyboard type, even though it is failed but somehow YDL already saved something in the HDD. The reason i said so is due to I did select keyboard type "UK" for more than 20 times but it always failed until I reformat the HDD yesterday.
So to me, if failed on the selection once, better perform a quick format on the HDD and retry on the keyboard selection. Else will forever stucked no matter what keyboard you trying to select.
I hope it helps!