I got dedi with debian os. Had torrentflux-b4rt installed, worked fine the first couple of days. Today i tried to refresh it and got no response, now i cant even get in, firefox just says "waiting for response"
server works fine, can vnc in, so it's something with the client

help, pls

The requirements for torrentflux is a webserver and a sql database, so you should check the status of those.
If both are processes are running fine you might want to check log-files. Like /usr/local/apache/logs assuming you're running apache webserver...

ive never used linux before, so could you tell how to do that? what commands, etc..

Well, it's been a while for me since I used linux, so someone might need to correct me.

Im assuming you're running apache webserver and mysql.

To restart apache use the console and do apachectl -k restart

and to restart mysql do /etc/init.d/mysql restart

If any error occurs it should be displayed in the console.

I would suggest you do a restart then see how you go.