503 Errors in Wordpress

[jayjaybaby]

I recently have been getting 503 errors on a wordpress site - it only
happens on this certain site running wordpress (all other PHP, non
wordpress sites work). I even uploaded a phpinfo file to the wordpress site and that displays fine. As for the 503 errors, error log shows entries like so:

2009-08-20 12:35:45.247 [INFO] [67.70.93.222:1307-0#APVH_www.xxxxxx.com]
HttpExtConnector state: 8, request body sent: 0, response body size:
0, response body sent:0, left in buffer: 8, attempts: 0.
2009-08-20 12:35:45.247 [INFO] [67.70.93.222:1307-0#APVH_www.xxxxxx.com]
File not found [/home/rfvncom/domains/xxxxxx.com/public_html/408.shtml]
2009-08-20 12:35:50.015 [NOTICE]
[67.70.93.222:1313-0#APVH_www.xxxxxx.com] No request delivery
notification has been received from LSAPI process:19455, possible run
away process.
2009-08-20 12:35:50.015 [NOTICE]
[67.70.93.222:1313-0#APVH_www.xxxxxx.com] Retry with new instance.
2009-08-20 12:36:04.006 [INFO]
[65.55.106.114:43074-0#APVH_www.xxxxxx.com] ExtConn timed out while
processing.
2009-08-20 12:36:04.006 [INFO]
[65.55.106.114:43074-0#APVH_www.xxxxxx.com] connection to
[uds://tmp/lshttpd/APVH_www.xxxxxx.com_Suphp.sock] on request #0,
confirmed: 1, Connection timed out!
2009-08-20 12:36:04.006 [NOTICE]
[65.55.106.114:43074-0#APVH_www.xxxxxx.com] Suspious request timeout,
associtated process: 19465, running: 1.
2009-08-20 12:36:16.451 [INFO] [67.70.93.222:1313-0#APVH_www.xxxxxx.com]
Connection idle time: 31 while in state: 5 watching for event: 25,close!
2009-08-20 12:36:16.451 [NOTICE]
[67.70.93.222:1313-0#APVH_www.xxxxxx.com] Content len: 0, Request line:
(null)
2009-08-20 12:36:16.451 [INFO] [67.70.93.222:1313-0#APVH_www.xxxxxx.com]
HttpExtConnector state: 8, request body sent: 0, response body size:
0, response body sent:0, left in buffer: 10982, attempts: 0.
2009-08-20 12:36:16.451 [INFO] [67.70.93.222:1313-0#APVH_www.xxxxxx.com]
File not found [/home/rfvncom/domains/xxxxxx.com/public_html/408.shtml]
2009-08-20 12:36:24.039 [INFO]
[66.249.68.200:58165-0#APVH_www.xxxxxx.com] ExtConn timed out while
processing.
2009-08-20 12:36:24.039 [INFO]
[66.249.68.200:58165-0#APVH_www.xxxxxx.com] connection to
[uds://tmp/lshttpd/APVH_www.xxxxxx.com_Suphp.sock] on request #0,
confirmed: 1, Connection timed out!
2009-08-20 12:36:24.040 [NOTICE]
[66.249.68.200:58165-0#APVH_www.xxxxxx.com] Suspious request timeout,
associtated process: 19485, running: 1.
2009-08-20 12:36:25.003 [INFO]
[66.249.68.200:58165-0#APVH_www.xxxxxx.com] Connection idle time: 31
while in state: 5 watching for event: 25,close!
2009-08-20 12:36:25.003 [NOTICE]
[66.249.68.200:58165-0#APVH_www.xxxxxx.com] Content len: 0, Request line:

It only started recently, but it sounds like something in lsws is
conflicting with wordpress? Any ideas?