I think you guys are still in 'Phase 1' of living in Poland. 'Phase 1' is fine.
Following my first year in Krakow (3.5 years ago!), I wrote an article for a local expat magazine called 'Krakout' (now since defunct) about this topic.
At the time I was an English teacher in Krakow, and I had done a class which I had downloaded from the internet about 'culture shock'.
According to research, there are four stages of culture shock experienced by expats when they move to a foreign country.
The first is positive - you are really excited to be in a new place, everything is exotic and different. You are partying, making new friends etc. It can last anywhere from a few days to a few months.
The second is negative - it's the 'shock' stage. You have the realities of life in a foreign place getting you down. Finding a job, dealing with bureaucracy, language barrier etc.
This phase can last a few months or so. Many will not get over this stage and will return home. Others will get over it by seeking out people from their own culture, finding someone to share your experience and your gripes with life in this foreign place.
The third and fourth phases are for the long term expats, the ones who decide to make this new place their home. The third, I think it was called 'acceptance' and involves you learning the language, settling down, making local friends and generally acclimitising to your new surroundings.
If you stay long enough (5 years +) then you may reach the fourth stage where you develop a dual identity. You essentially become like a local, though it's of course not possible to forego the identity/culture you grew up with.
At any point in time, you may decide to go home. It is at this point (and it depends how long you have been away) that you encounter 're-entry shock'. You have been changed by your experience, grown as a person. The only problem is that your friends and family at home haven't changed. They are more interested in what is happening in their own life and don't particularly care for your stories and experiences.
If anyone is interested, I will track down the original article and post it here when I get the chance.