I tried to find out something more about this problem, but I couldn´t.

My problem is, that I don´t get any IN connections.

http://84.42.144.19:9332/static/

Version: 13.4
Pool rate: 292TH/s (17% DOA+orphan) Share difficulty: 1280000
Peers: 8 out, 0 in
Local rate: 8.85GH/s (5.1% DOA) Expected time to share: 7.2 days
Shares: 0 total (0 orphaned, 0 dead) Efficiency: Huh

I use P2Pool release 13.4 for Windows (https://bitcointalk.org/index.php?topic=18313.0)
I have open all ports OUT, and these ports IN: 8333,9332,9333

Thank you in advance for any help.