Frequent changes of DSL-IP-Adress

Hi,

since some days I am troubbled from the often changing of my IP-Adress  
what disturbes some Web-Applications, fixing for security-reasons  the  
IP-Addr.

First I guessed that the enabling the "traffic-shaper" could be the  
reason of. But I disabled it now and problens remains...!

I am running the actual stable version and had never before these problems

Is this now a problem of my provider or could it be also a problem of M0N0??

Thanks in advance for Your reply

Ralf

Here some messages of the horde-Application:

Letzte Anmeldung: Mi 08 Jul 2009 01:24:07 CEST von  
dslb-084-057-143-174.pools.arcor-ip.net

Letzte Anmeldung: Mi 08 Jul 2009 22:42:38 CEST von  
dslb-084-057-165-016.pools.arcor-ip.net

 Letzte Anmeldung: Do 09 Jul 2009 00:54:22 CEST von  
dslb-084-057-137-081.pools.arcor-ip.net

Letzte Anmeldung: Do 09 Jul 2009 00:59:25 CEST von  
dslb-084-057-161-044.pools.arcor-ip.net

Letzte Anmeldung: Do 09 Jul 2009 01:05:31 CEST von  
dslb-084-057-173-079.pools.arcor-ip.net

 Letzte Anmeldung: Do 09 Jul 2009 01:10:43 CEST von  
dslb-084-057-186-176.pools.arcor-ip.net