Problems with Cacheflow proxy

[Ken Seefried]

I'm having some issues with using lftp 2.6.2 on RedHat 8.0 through a Cacheflow (now Blue Coat) proxy appliance.
I'm using the following test script:
-----
set ftp:passive-mode
set ftp:proxy http://cacheflow2-lab:8080/
debug 9
open ftp.kernel.org
cd /pub/
get README
exit
-----
And here is what I get when I run it:
-----
[ken@kjs3 tmp]$ lftp -f ftp.txt
---- Resolving host address...
---- 1 address found
---- Connecting to proxy cacheflow2-lab (10.87.215.6) port 8080
---- Sending request...
---> HEAD ftp://ftp.kernel.org/%2Fpub/ HTTP/1.1
---> Host: ftp.kernel.org
---> User-Agent: lftp/2.6.2
---> Connection: keep-alive
--->
<--- HTTP/1.0 200 OK
<--- Connection: close
<--- Content-Type: text/html
<---
---- Closing HTTP connection
---- Connecting to proxy cacheflow2-lab.cingularlab.com (10.87.215.6) port 8080
---- Sending request...
---> GET ftp://ftp.kernel.org/%2Fpub/README;type=i HTTP/1.1
---> Host: ftp.kernel.org
---> User-Agent: lftp/2.6.2
---> Connection: keep-alive
--->
<--- HTTP/1.0 502 Bad Response
---- Closing HTTP connection
`README' at 0 [Delaying before reconnect: 26]
-----
Any clues?
Ken