[ZendTo] > 2GB upload woes

[--[ UxBoD ]--]

Hello all, 

Have recompiled PHP to allow uploads > 2GB but to no avail :( If under 2GB it works fine but if > then I am ending up with: 

Firefox can't find the file at https://XXXXXXXXXXXXXXXXX/dropoff.php. 

and nothing appears in the error log. I have checked what the values are: 

[root at xxxxxxxxxxxx]# php -i | grep -i size 
post_max_size => 10G => 10G 
upload_max_filesize => 10G => 10G 

I used the documented process against: 

PHP Version => 5.3.8 

and all compiled fine. Any ideas where else to look ? This is under CentOS 6. 
-- 
Thanks, Phil 
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