> I am trying to download a site that tracks usage 
with sessions IDs. I get like 50 or more 
files ';$sessionid$ZAK4H3QAAJAWFQHIO2SHWGA.html' each 
one with a different ID but they are all the same 
file! 
> Is there a workaround?
Unfortunately, no. There is not way to detect that a 
page is identical to another one, except by 
downloading it.. at this time (when downloaded), all 
links which refers to the page will be already built