VN 1.6.3 - internal server error 500 when getting XML file through a reverse-proxy

Hi,

Our configuration:
- a SVN server + https+ mod_dav_svn(1.6.3)
- for access from internet, a reverse-proxy+mod_security

The server can be reached :
- from our internal network directly: in this case we dont have problem
- from internet through a reverse-proxy: in this case we have problems
when getting some Xml files

All the errors comes when getting Xml files except three files (1 doc, 1
xls, 1 pdf).

On the client side ,we use "tortoise v1.6.3" (the most used), "svn
v1.6.3 (command line)" or SmartSVN v6.03:
- with tortoise 1.6.3, the pb occurs systématically on the same files

Can you help me please.

-- 
	-- Cordialement ----------
	Claude CHERET
	Communication et systèmes
	claude.cheret_at_c-s.fr
	01 41 28 96 50
	--------------------------
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