request failed: error reading the headers

[testtubebaby]

Hi,

I have setup cpanel server recently. There is no domain hosted on it and I see the following errors in /usr/local/apache/logs/error_log

[email protected] [~/SOFTWARE-DOWNLOADS]# tail -f /usr/local/apache/logs/error_log | grep headers
[Fri May 23 03:56:14 2008] [error] [client 88.240.242.204] request failed: error reading the headers
[Fri May 23 03:56:14 2008] [error] [client 78.180.199.162] request failed: error reading the headers
[Fri May 23 03:56:14 2008] [error] [client 72.201.27.34] request failed: error reading the headers
[Fri May 23 03:56:14 2008] [error] [client 67.164.18.226] request failed: error reading the headers
[Fri May 23 03:56:14 2008] [error] [client 70.130.188.105] request failed: error reading the headers


In WHM apache status I see the folllowing:

Srv PID Acc M CPU SS Req Conn Child Slot Host VHost Request
0-2 18618 2/5748/22036 W 3.29 1 0 0.7 2.02 7.75 78.183.208.205 server01.myservername POST http://yahoo.com HTTP/1.1
1-2 18619 0/5796/22256 W 3.30 3 0 0.0 2.04 7.82 127.0.0.1 server01.myservername GET /whm-server-status/ HTTP/1.0
2-2 18620 2/5682/21814 W 3.16 2 0 0.7 2.00 7.68 88.240.204.170 server01.myservername POST http://yahoo.com HTTP/1.1
3-2 18621 0/5642/21941 _ 3.19 1 0 0.0 1.98 7.72 72.201.27.34 server01.myservername POST http://yahoo.com HTTP/1.1
4-2 18622 2/5782/21926 W 3.28 3 0 0.7 2.03 7.71 85.106.233.35 server01.myservername POST http://yahoo.com HTTP/1.1
5-2 18642 2/5608/21906 W 3.18 2 0 0.7 1.97 7.71 78.180.199.162 server01.myservername POST http://yahoo.com HTTP/1.1
6-2 18658 0/5657/21941 _ 3.18 1 0 0.0 2.00 7.72 88.234.47.182 server01.myservername POST http://yahoo.com HTTP/1.1



Is this some kind of attack? There are tons of such requests.