Snort banning myself every hour

[_igor_]

I encounter that snort is banning myself every hour or when my browser checks open sites. I have multiple tabs open and did entered under suppression the necessary things, but again i get blocked.

(http_inspect) DOUBLE DECODING ATTACK
 	 2	 My IP	 (portscan) UDP Filtered Portsweep
 	 3	 My IP	 (portscan) TCP Portsweep

Here my browser crashed and i had to restart it.

My suppression entries look like this:

suppress gen_id 122, sig_id 3
suppress gen_id 122, sig_id 23

Do i have to enter the source-IP? It changes often (ISP via PPPOE) due to a bad line.