Genealogy / Looking for Kupers. [9]

As I posted somewhere before - try Red Cross. They might help you. My uncle from uk found me through Red Cross :]

Language / ż ź dź dż sz cz ś ć - which give most problems to foreigners? [65]

guys about ś and sz - maybe someone have mentioned it before - i just scanned this thread -
ś - is back palatal, back tongue touches somewhere beetwen back and middle palate, while the tip of tongue touches your lower teeth.
sz - back tongue is in low position while tip rolls and touches mid palate.

I hope this will help. If not, i can show it if someone lives in Leeds :]

Language / ż ź dź dż sz cz ś ć - which give most problems to foreigners? [65]

Well ch as in chleb was this ch with a little bit of spit (like in arabic) and the h was smooth, like in Hull. I think this difference faded somehow and probably very few people would recognize them now. Poles (especially teens) confuse them in writing very often, which looks really terrible.

Language / ż ź dź dż sz cz ś ć - which give most problems to foreigners? [65]

Well in case of ch-h i don't find .any difference. My mum was teaching me how to distinguish phonetically chleb and hak in order to write it corectly but u know... i just learnt it by heart :p

The older generation must have recognized these two sounds somehow but not mine anymore. Remember guys, the language changes... :]