If you are getting frequent disconnections since Friday September 25th, there's a good chance that your Hackshield folder is not updating properly when you start Combat Arms. Please follow these steps in an attempt to resolve the issue:
1. Reboot your computer
2. Erase all files in the HShield folder in the Combat Arms installation folder (usually located in the C Drive - C:\Nexon\Combat Arms)
3. Download the files.
4. Copy all the files and paste to the HShield folder inside the Combat Arms installation folder
5. Run the game
This is what happenend to me, i've un-installed CA 3 times and re-installed it. That didn't solve the problem.. as the problem presists i am get frustrated.. so i go Combats Arms site.. and read this.. and posting this to help other users who don't know whats going on.