Hi,
About IE:
if you're talking about the issues described
here you can stand still :Smile_Ab: we've taken care of that.
About FX:
We don't know about any leak on Firefox. Probably what you are seeing is the growing of memory usage due the fetching of data. If you observe a bit longer the memory usage (could be a very long bit depending on server configuration/update frequency) you will see how periodically memory is released. This happens when the content-length of the streaming connection is reached. Please take a look at server configuration where you can change the content-length setting and so let memory to be released sooner or later as you like.
Here is a snippet from server's config file with a small content-length:
<content_length>
<default>10000</default>
</content_length>
Hope that helps.
Bye.