filesize limit?

[Michal Hajek <hajek1@karlov.mff.cuni.cz>]

Hello :) 

I run accross a question, what is the maximum filesize for default
instalation of amd64 debian sid with ext3 filesystem and kernel version
2.6.11-9-amd64-k8 ? 

If I understand it correctly, how big files can be handeled also depends
on the application which manipulates them. 
Eg. if I have tar version 1.4, than how big files can I produce with it? 
I could not find it either in manpages or in google. 

How should one search for such an info? Or is the question wrong? 

Thank you in advance. 

Best regards
Michal