Crack in the wall indicating serious problems?

[Amardeep G.]

Hi all, 

I was looking at an otherwise promising property and I saw this photo with a couple of cracks in the wall.  I'm not a DIY'er and so I thought I'd reach to more experienced people - could this indicate serious structural problems or is it mainly cosmetic (or would you need an inspection to know for sure).  I don't want to waste my time with this one if this is a deal-breaker.  

Thanks in advance. 

Sonny