Hacked?

Hello,
I think my site has been hacked and wounderd if someone could help me. If I try to go into forum admin it brings up a page with PsychoPhobia Has You on it. Is this right? as I'ts the first time I have tried to use this section. Any help would be much appreciated,
Best wishes,
Terry.

Could you provide us with a link please.

Yes sure,
what you mean to the site? http://www.tsullivan.net/index.php
or www.tsullivan.net Im not sure if this is what you mean (sorry but new to all this) please excuse my ignorance. Thx in advance.
Terry.

Do you mean when you goto the admin.php page or once you have logged in?

Hello Carbonize,
Mmm not sure really, I log in first and then try to go to the forum admin. All the others work ie. Guestbook admin,news section, etc but as soon as I click on the forum admin It just brings this page up with PsychoPhobia Has You written on it with a bad poem and something about written by Ddos. hope this helps,
Thanks again, Terry

Ah right got you now. Thought you were just on about the guestbook. Without knowing which forum script you are using or the location of the admin page I can't be of much use.

Hello Carbonize,
I hope this helps, Zend Engine v1.2.0, .. http://www.tsullivan.net/forum/admin/.. http://www.tsullivan.net/index.php?a=admin

I should have studied more, Lol. Thanks,
Terry.

Well everythngs fine so far.the problem must only happen when you've logged in.

Ok then,
I think I'm going to get someone else to do this for me, Lol.
Thank you for all your help though. Best wishes.
Lee.

I have been having a problem with the guestbook 2.3 too. I upgraded in July to 2.3 from 2.0 because I was hacked. The new guestbook was working fine. Then I had a post in German. I check out his email in google and he has posted on many guestbooks. His home page was a casino site. When I click on the link in my guestbook. The host had taken off his site and placed a message stating he had violate agreements in what internet thing he was doing. Not sure what. Anyway, when I went to delete his posting in my easy admin, I got an error page that says

Fatal error: Cannot instantiate non-existent class: gb_image in /home/aluminou/public_html/guestbook/lib/admin.class.php on line 101

It is also comin up in the private message admin. I found the line with gb_image but what do I do with it?
Is this a hack of some kind?

I think this error message is a result of some files missing from the lib directory. Read the following post:

http://proxy2.de/forum/viewtopic.php?t=3617&highlight=instantiate