Hey

I'm having a problem so strange with the multi player mode,
when i try to play in mode multi player at the afternoon for example at 16:00 PM or 20:00 PM or 22:00 PM at clock, the servers list just don't appear.
but.. when i try to play toribash at 3:00 AM to 7:00 AM at clock, this works good, the servers appear and every thing works good.

And my question is why this happens? and what can i do to fix this?

there is not a problem with the firewall and antivirusk because i refused them. and this is not a problem with the router neither, because i opened all the ports.

Hope Answers.

Still you never said you reinstalled it
reinstall first and lets see what happens

try fixing something with you internet connection

Find out if your ISP has a 'fair usage policy' or similar. Some have a nasty habit of port blocking between certain hours to stop network congestion.