Cycling on the footpath in Warsaw - not permitted?

I recently read somewhere (In Your Pocket I think) that cycling on the footpath in Warsaw is not permitted - I mean when there is no designated bike path. Is this true? I am using my bike here almost everyday and until now no policeman ever stopped me on such occasions, but still....

It's illegal but plenty of cyclists do it. The annoying thing is that they do it so casually and some of them expect people to get out of their way, but yell at anyone walking on a cycle path.

Well... Often you have as a cyclist no choice at all. Warsaw drivers have a murderous disregard for any cyclist foolishly using the road. I prefer the asphalt to the wobbly sidewalks but I do not want to get killed. And I am trying to avoid the people on foot :)

This much is true! It does seem though that the dreadful driving habits of Polish motorists have rubbed off a bit on the cyclists who use the pavements.