Typically I would use this link:
and then choose the program episode I want.
I have also tried on Chrome and Firefox which all crash just the same as Opera after anywhere between 7 and 15 minutes. Every time it crashes Firefox comes up with message:
Warning unresponsive script. http://static.bbci.co.uk/frame.../sharedmodules/jquery-1.9.1.js:14
or js 1 or js 21.
I have just had my computer expert clean up the computer, clear cache, clear history, get rid of malware, etc and he can find nothing wrong with either PC.
Every other program works fine.
I suspect it is a BBC problem. You can report it to them, but they do not respond - just stick it on their fault list.