When your Orange Internet Everywhere file transfers all get stuck

..no matter where you are trying to transfer the file: It could be a file upload, an attachment to the e-mail your sending, or an unusually long e-mail. It is the same problem with different files and different destinations. Still web-surfing works just fine.

So what is the problem? The problem is the MTU setting of your network connection. The MTU setting controls the longest piece that can be transfered in one chunk over your network connection.  Sometimes Internet Everywhere has very bad performance and can only handle small chunks. You can get file transfer working again by setting MTU to a small value of 576.

On Ubuntu, you can do this for Internet Everywhere by typing:

sudo ifconfig hso0 mtu 576

Taken and modified from this guide. This is not a persistent setting though. For Windows there is also a way of changing the MTU but I have not looked it up since I do not need it right now.