Since Tanks DLC I have been unable to join a server for any decent period of time before getting kicked from the server due to signature check timing out. Numerous other people seem to have the issue.
Things I have tried:
Deleting Profile
Verifiying Game Files
Reinstalling Arma
Reinstalling Battleye
Reinstalling Mods

This has seriously hindered my ability to play Arma. On some servers its worse than others.