Странная проблема

[Dmitry V. Lunin]

Возникло сегодня после 18:00. Конфиг не менялся. До этого месяц все 
работало.

2005/03/09 18:37:45 [error] 13950#0: *5176 client 83.27.119.194 sent 
invalid method "s" 

2005/03/09 18:37:45 [error] 13950#0: *5159 client 62.111.198.94 sent 
invalid method "ZGu" 

2005/03/09 18:37:45 [error] 13950#0: *5162 client 201.133.255.67 sent 
invalid method "Bt" 

2005/03/09 18:37:45 [error] 13950#0: *5177 client 66.66.16.96 sent 
invalid method "t" 

2005/03/09 18:37:45 [error] 13950#0: *5170 client 220.76.82.190 sent 
invalid method "A7" 

2005/03/09 18:37:45 [error] 13950#0: *4042 client 213.215.73.226 sent 
invalid method "SZOxMB2anXWTJXznXfoGfQat" 

2005/03/09 18:37:45 [error] 13950#0: *5161 client 67.8.230.81 sent 
invalid method "WW7" 

2005/03/09 18:37:45 [error] 13950#0: *5179 client 212.156.204.63 sent 
invalid method "u" 

2005/03/09 18:37:45 [error] 13950#0: *5171 client 65.65.221.153 sent 
invalid method "Ff" 

2005/03/09 18:37:46 [error] 13950#0: *5146 client 84.97.195.166 sent 
invalid method "US.X" 

2005/03/09 18:37:46 [error] 13950#0: *5173 client 64.86.249.179 sent 
invalid method "Dq" 

2005/03/09 18:37:46 [error] 13950#0: *5169 client 217.144.201.222 sent 
invalid method "PVk" 

2005/03/09 18:37:46 [error] 13950#0: *5182 client 66.249.195.152 sent 
invalid method "c" 

2005/03/09 18:37:46 [error] 13950#0: *5056 client 201.0.90.87 sent 
invalid method "QWKwk9lD.OQ3"