The log files on each domain show some files that are missing but surely that shouldn't be crashing the server?
/var/www/vhosts/swansea.info/httpdocs/Hotels/var, referer:
http://swansea.info/Hotels/showHotel.php?hID=2000094
[Tue Dec 18 08:52:33 2007] [error] [client 74.6.20.160] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Webcams/Restaurants
[Tue Dec 18 08:55:51 2007] [error] [client 65.55.210.39] Directory index forbidden by rule: /var/www/vhosts/swansea.info/httpdocs/images/
[Tue Dec 18 08:56:07 2007] [error] [client 65.55.210.39] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Property
[Tue Dec 18 09:12:04 2007] [error] [client 62.172.179.40] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Hotels/var, referer:
http://www.swansea.info/Hotels/showHotel.php?hID=2000015
[Tue Dec 18 09:12:04 2007] [error] [client 62.172.179.40] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Hotels/var, referer:
http://www.swansea.info/Hotels/showHotel.php?hID=2000015
[Tue Dec 18 09:19:09 2007] [error] [client 65.55.210.41] script '/var/www/vhosts/swansea.info/httpdocs/Nightlife/showBartInvite.php' not found or unable to stat
[Tue Dec 18 09:21:19 2007] [error] [client 65.55.210.42] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 09:27:10 2007] [error] [client 65.55.210.35] Directory index forbidden by rule: /var/www/vhosts/swansea.info/httpdocs/images/
[Tue Dec 18 09:28:26 2007] [error] [client 65.55.210.35] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Hotels/Restaurants
[Tue Dec 18 09:29:53 2007] [error] [client 65.55.210.41] Directory index forbidden by rule: /var/www/vhosts/swansea.info/httpdocs/images/
[Tue Dec 18 09:29:53 2007] [error] [client 65.55.210.41] Directory index forbidden by rule: /var/www/vhosts/swansea.info/httpdocs/images/
[Tue Dec 18 09:29:55 2007] [error] [client 65.55.210.41] Directory index forbidden by rule: /var/www/vhosts/swansea.info/httpdocs/images/
[Tue Dec 18 09:31:10 2007] [error] [client 65.55.210.41] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Hotels/Restaurants
[Tue Dec 18 09:43:58 2007] [error] [client 74.6.24.219] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 09:47:06 2007] [error] [client 65.55.210.38] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 09:50:26 2007] [error] [client 65.55.210.38] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Property
[Tue Dec 18 09:52:08 2007] [error] [client 90.199.157.196] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Restaurants/css, referer:
http://swansea.info/Restaurants/
[Tue Dec 18 09:52:42 2007] [error] [client 65.55.210.40] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Property
[Tue Dec 18 09:52:43 2007] [error] [client 65.55.210.40] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 09:53:11 2007] [error] [client 65.55.210.40] Directory index forbidden by rule: /var/www/vhosts/swansea.info/httpdocs/images/
[Tue Dec 18 09:53:27 2007] [error] [client 65.55.210.38] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Property
[Tue Dec 18 09:53:27 2007] [error] [client 65.55.210.38] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 09:53:28 2007] [error] [client 65.55.210.38] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 09:53:28 2007] [error] [client 65.55.210.38] File does not exist: /var/www/vhosts/swansea.info/httpdocs/Businesses
[Tue Dec 18 10:10:58 2007] [error] [client 65.55.210.37] script '/var/www/vhosts/swansea.info/httpdocs/Nightlife/showBartInvite.php' not found or unable to stat
[Tue Dec 18 10:10:59 2007] [error] [client 65.55.210.37] script '/var/www/vhosts/swansea.info/httpdocs/Nightlife/showBartInvite.php' not found or unable to stat
[Tue Dec 18 10:11:26 2007] [error] [client 65.55.210.37] script '/var/www/vhosts/swansea.info/httpdocs/Nightlife/showBartInvite.php' not found or unable to stat
[Tue Dec 18 10:24:58 2007] [error] [client 65.55.165.50] File does not exist: