What time does the stores close in Warsaw Poland?

I am planning on doing some shopping when I am in Warsaw Poland. I was wondering what time the stores close?

It's kind hard to shop when the stores are closed. Unless "shopping" is some kind of euphemism... be careful ;)

If you go to one of the big shopping malls you don't have to worry about closing times - they are open well into the evening. I remember coming to London and being shocked about almost all the shops (not grocery stores) closing at 5 pm. ;-(

Tescos are opened 24h a day.

Shopping malls stay open until 22:00. But there are always "night shops" open all night, where you have to brave all the alcoholics buying their booze :)

And of course all petrol stations have always the essentials in stock.