using the QOS abilities of smoothwall 3 you can limit the bandwidth of certain apps

 

here's before I limit

<a class="ipsAttachLink ipsAttachLink_image" href="<fileStore.core_Attachment>/monthly_10_2007/post-1-1192228883.png" data-fileid="974">[img]<fileStore.core_Attachment>/monthly_10_2007/post-1-1192228883.png[/img]</a>

and here's the same network after i enabled QOS

<a class="ipsAttachLink ipsAttachLink_image" href="<fileStore.core_Attachment>/monthly_10_2007/post-1-1192228952.png" data-fileid="975">[img]<fileStore.core_Attachment>/monthly_10_2007/post-1-1192228952.png[/img]</a>