Redmine

Hello,

I'm running a Debian Testing.
Kernel 2.6.30-2-amd64
ruby1.8 installed from Debian Repository
rails 2.2.3-2
Redmine 0.9.1.stable (SQLite)
Mysql 5.1
Ruby-aware server used: Webrick

Here's the trouble :
when i tried to upload a file ( 420K for the exemple ) < the max size ( 5120K ), the upload could not complete.
I compared the size and the CRC of the file from the server and it was not the same.
This concerns the "wiki", and "Files" tab.

Any another file ( not too big ) did not have this trouble...

Could you explain me about this issue, please ?
A config that i forgot ? Or something else ?

Thank you in advance.