このUA、なんだろ。
Accept: */* を送ってこないから、406エラーになってる。

206.223.151.216 - - [06/Mar/2005:03:06:17 -0800] "GET /test/-/gameover/1109207451/i/ HTTP/1.1" 406 383 "-" "Hutech2.01[DoCoMo/1.0/D505iS/c20/TB/W20H10]"
206.223.151.216 - - [06/Mar/2005:03:36:51 -0800] "GET /test/-/gameover/1107732525/i/ HTTP/1.1" 406 383 "-" "Hutech2.01[DoCoMo/2.0 F900iT(c100;TB;W22H12)]"
206.223.151.216 - - [06/Mar/2005:03:37:48 -0800] "GET /test/-/gameover/1107352744/i/ HTTP/1.1" 406 383 "-" "Hutech2.01[DoCoMo/2.0 F900iT(c100;TB;W22H12)]"
206.223.151.216 - - [06/Mar/2005:03:38:25 -0800] "GET /test/-/gameover/1107341010/i/test.php HTTP/1.1" 406 391 "-" "Hutech2.01[DoCoMo/2.0 F900iT(c100;TB;W22H12)]"
206.223.151.216 - - [06/Mar/2005:04:12:33 -0800] "GET /test/-/taiwan/1108309927/i/ HTTP/1.1" 406 381 "-" "Hutech2.01[DoCoMo/2.0 N900iS(c100;TB;W24H12)]"