[plt-scheme] web-server: saving memory in file uploads

Dear Schemers,

I've been doing a lot of work with file uploads to the web-server  
using Jay's LRU continuation manager. I've noticed that when people  
upload large files:

     - the files are loaded into memory as part of the request object;
     - the high memory usage causes the LRU manager to collect all  
(older) continuations.

This is bad because our users are frequently getting expired pages.

Is there any way to save memory in file uploads (e.g. can the web- 
server represent uploaded files as input-ports or save them to the  
file system)?

Cheers,

-- Dave