Memory leak OSX?

I noticed the other day that my MacBook Pro was running low on memory, which happens often. When I took a look at the Activity Monitor I noticed WhatPulse was using almost 1 GB of RAM. This seemed like a lot to me, so I pulsed my current progress, exited WhatPulse and restarted it. Now it was using only 30 MB.

Today, one day later, I check the Activity Monitor and notice WhatPulse is running at 200 MB again. I presume it will be 1 GB soon enough again. Could it be there is some kind of memory leak in the OSX-version of WhatPulse ?

I’m running WhatPulse 2.0.4 on OSX 10.7.5 (which is 64bit). My WhatPulse-username is Trinorae.

There seems to be something with the networking on certain configurations. Work around for now is to disable that part.