god how i hate PP. I have been having nothing but a nightmare with them when it comes to gettin my mail.
I'm the exact opposite - never had a problem, even with deliveries that have the customs declaration clearly printed on it with the value/etc. They're not the quickest in the world, but that can be forgiven.
In fact, the only bad thing about them is the way they don't accept cards in the post office - but it's a small price to pay. Look at the integration between the post office and the delivery side of things - compared to the Royal Mail, it's an absolute dream.
Other people's mileage may vary - it's probably no surprise that the service in Poznan is efficient and....Germanic.