hack has been detected1,2.0)

Hello i have a problem with the crossfire. problem emerged on Friday.
cf reinstall give nothing, cleaner, etc. .. I have a desktop computer
and the router (Stientific Atlanta). Rather, I have no possibility to change ip, please solve the problem.
[sorry for english]

my performance

FPS 60-100
PING 45-50
Microsoft Windows XP Professional 32-bit SP3
Intel Pentium D CPU 3.00GHz
ATI Radeon HD 4300/4500 Series
3GB ram

never used hacks

http://imageshack.us/photo/my-images/585/28599468.png/