Recently seeing a bunch of 400s

[Neil Sheth]

Hello,

I'm seeing a bunch of entries like the following in my nginx access log:

88.147.21.24 - - [02/Dec/2008:04:16:43 -0600] "-" 400 0 "-" "-"
72.14.204.136 - - [02/Dec/2008:04:16:43 -0600] "-" 400 0 "-" "-"
88.147.21.24 - - [02/Dec/2008:04:16:46 -0600] "-" 400 0 "-" "-"
88.147.21.24 - - [02/Dec/2008:04:16:48 -0600] "-" 400 0 "-" "-"
88.147.21.24 - - [02/Dec/2008:04:16:51 -0600] "-" 400 0 "-" "-"
72.39.110.147 - - [02/Dec/2008:04:16:53 -0600] "-" 400 0 "-" "-"
88.147.21.24 - - [02/Dec/2008:04:16:54 -0600] "-" 400 0 "-" "-"
67.165.72.106 - - [02/Dec/2008:04:16:56 -0600] "-" 400 0 "-" "-"
88.147.21.24 - - [02/Dec/2008:04:16:57 -0600] "-" 400 0 "-" "-"
82.37.232.219 - - [02/Dec/2008:04:17:00 -0600] "-" 400 0 "-" "-"
220.255.7.179 - - [02/Dec/2008:04:17:39 -0600] "-" 400 0 "-" "-"
220.255.7.218 - - [02/Dec/2008:04:17:39 -0600] "-" 400 0 "-" "-"
72.21.243.194 - - [02/Dec/2008:04:17:41 -0600] "-" 400 0 "-" "-"
220.255.7.141 - - [02/Dec/2008:04:17:41 -0600] "-" 400 0 "-" "-"
220.255.7.162 - - [02/Dec/2008:04:17:42 -0600] "-" 400 0 "-" "-"
220.255.7.184 - - [02/Dec/2008:04:17:42 -0600] "-" 400 0 "-" "-"

and so on . . .

I'm running 0.6.32.  A bit of a loss as to where to start looking -
any suggestions?

Thanks!