The problem with Apache, Rewite on 64bit:
apache:
apache         1.3.33-4
platform:
x86_64
system:
debian 3.1
kernel 2.6

the goal:
www.domain.hu/redirect/35234 >>rewrite to>> www.domain.hu/redirect.php?id=35234

.htaccess (just 2 lines because of test):
RewriteEngine On
RewriteRule ^redirect/([a-zA-Z0-9]{1,11}) /redirect.php?id=$1 [L,NC]

and here is the log:
(3) [per-dir /vhost/www/www.domain.hu/] add path-info postfix:
/vhost/www/www.domain.hu/redirect.php ->
/vhost/www/www.domain.hu/redirect.php/1111
(3) [per-dir /vhost/www/www.domain.hu/] strip per-dir prefix:
/vhost/www/www.domain.hu/redirect.php/1111 -> redirect.php/1111
(3) [per-dir /vhost/www/www.domain.hu/] applying pattern
'^redirect/([a-zA-Z0-9]{0,11})' to uri 'redirect.php/1111'
(1) [per-dir /vhost/www/www.domain.hu/] pass through
/vhost/www/www.domain.hu/redirect.php

The URI is wrong, why is there the ".php" extension?
...and begin to rewrite

If the script file name not redirect.php, rather than do_redirect.php (so, it
doesnt find redirect.php in the directory) then everything goes without error.
This rewrite goes on other "clone system", everything is same, but 32bit, not
amd opteron 64bit