why the polish people dont like the greeks?

Is it really truth? I don't know Greeks personally, but I never heard any bad opinion on Greeks generally. I know only Eleni and Paulos Raptis - greek singers that came to Poland many years ago. Polish had rather positive attitude toward them .

Can you give some examples or even research results?

i'm polish and i like greeks . actually i used to go out with a greek girl!