yes, checked cpu fan, was one of first things i was advised to check, as cpu temperature was running up to about 47 degrees at times, cpu fan is definitely working. was then advised by pc shop that my cpu could safely run up to a lot higher temperature than this, so therefore i didnt need new fan? (good/bad advice i'm yet to find out!).
As for case fan, yes, i did install one, and that is working perfectly at moment, internal case temperature is normally around 27 degrees roughly....