Is this a hacker???

Is this a hacker???

I am getting "Database error in...mydomain" emails sent to me every day.  What are these, and why is this happening? Also how do I stop it?

Is there a fix? I'm running 6.05.

Here is an example of what I am receiving in my email...

Database error in My Domain
Mysql error:
Can't connect to local MySQL server through socket
'/var/lib/mysql/mysql.sock' (111)

Debug backtrace:
Array
(
[1] => Array
(
[file] =>
/home/mystuff/public_html/community/templates/base/scripts/BxBaseConfig.php
[line] => 23
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/inc/db.inc.php
)

[function] => require_once
)

[2] => Array
(
[file] =>
/home/mystuff/public_html/community/templates/tmpl_uni/scripts/BxTemplConfig.php
[line] => 21
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/templates/base/scripts/BxBaseConfig.php
)

[function] => require_once
)

[3] => Array
(
[file] =>
/home/mystuff/public_html/community/inc/params.inc.php
[line] => 102
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/templates/tmpl_uni/scripts/BxTemplConfig.php
)

[function] => require_once
)

[4] => Array
(
[file] =>
/home/mystuff/public_html/community/inc/profile_disp.inc.php
[line] => 23
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/inc/params.inc.php
)

[function] => require_once
)

[5] => Array
(
[file] =>
/home/mystuff/public_html/community/inc/match.inc.php
[line] => 22
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/inc/profile_disp.inc.php
)

[function] => require_once
)

[6] => Array
(
[file] =>
/home/mystuff/public_html/community/inc/admin.inc.php
[line] => 22
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/inc/match.inc.php
)

[function] => require_once
)

[7] => Array
(
[file] =>
/home/mystuff/public_html/community/inc/design.inc.php
[line] => 28
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/inc/admin.inc.php
)

[function] => require_once
)

[8] => Array
(
[file] =>
/home/mystuff/public_html/community/guestbook.php
[line] => 22
[args] => Array
(
[0] =>
/home/mystuff/public_html/community/inc/design.inc.php
)

[function] => require_once
)

)


Called script: /community/guestbook.php

Request parameters:
Array
(
[owner] => 1
[action] => new
[newrecord] => Hello everybody!, baby lightweight stroller,
twjwmj, home lawton mobile oklahoma,  153, customer manager relationship,
8-(((, classic adult film,  960, custom uniform manufacturer,  572459,
hostels auckland,  ryt, bantam for sale,  0674, japanese schoolgirl
XXX school,  >:-OO, polo polo comediante,  ugguxi, fake rolex oyster
perpetual day date,  8[[[, funtana mini,  nkbr, numerology portrait,
3716, russ bassett,  :-PP, lucky ducks commercial,  %-))), machesney park
illinois,  8-(, grove pleasant texas,  kdmf, bolens sale tractor,  8-D,
pink new single,  442, polo jeans sunglasses,  %DD,
[add] => Add record
)


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