After Clicking “Preview”, v.2.7.1., displays “parked page courtesy of hostmonste

Installed new, clean version of 2.7.1 for a brand new blog. The main domain is v2.6.3 I believe, and 3 other ones upgraded to 2.7. This is the first fresh install using 2.7.1. First I used an existing database, everything seemed to be going along fine, until I clicked the “Preview” button to preview the About Page I just created. Got a 500 Error I believe. After that, when I went to view my post on the home page, I got a page that said “this page is parked courtesy of hostmonster.com”. I have quadruple checked to make sure it was an add-on domain and not a parked domain.
Then without being able to figure out what was wrong, I created a brand new database and again, all seemed to be working fine. I added a widget, and made an About page, and once again as soon as I hit the “preview” button to look at it before publishing, I got the same errors as above, on the About page and the Home page. I don’t have any other pages created and didn’t create any posts. I did delete the “Hello World” post after I created my about page.

I went to the error log and this is the string of errors I got:

[Thu Feb 19 14:12:38 2009] [error] [client 72.30.65.60] PHP Warning: Zend Optimizer for PHP 5.2.x cannot be found (expected at ‘/usr/local/Zend/lib/Optimizer_TS-2.5.10/php-5.2.x/ZendOptimizer.so’) – try reinstalling the Zend Optimizer in Unknown on line 0 [Thu Feb 19 14:12:48 2009] [error] [client 72.30.142.181] Failed loading /usr/local/Zend/lib/Optimizer/php-5.2.x/ZendOptimizer.so: /usr/local/Zend/lib/Optimizer/php-5.2.x/ZendOptimizer.so: undefined symbol: compiler_globals [Thu Feb 19 14:12:48 2009] [error] [client 72.30.65.60] PHP Warning: Zend Optimizer for PHP 5.2.x cannot be found (expected at ‘/usr/local/Zend/lib/Optimizer_TS-2.5.10/php-5.2.x/ZendOptimizer.so’) – try reinstalling the Zend Optimizer in Unknown on line 0 Can’t use string (“2.3”) as a HASH ref while “strict refs” in use at /usr/local/apache/htdocs/404.cgi line 159. [Thu Feb 19 14:12:51 2009] [error] [client 74.247.227.35] File does not exist: /usr/local/apache/htdocs/autodiscover Can’t use string (“2.3”) as a HASH ref while “strict refs” in use at /usr/local/apache/htdocs/404.cgi line 159. [Thu Feb 19 14:12:51 2009] [error] [client 74.247.227.35] Premature end of script headers: 404.cgi [Thu Feb 19 14:13:10 2009] [warn] RewriteCond: NoCase option for non-regex pattern ‘-f’ is not supported and will be ignored. [Thu Feb 19 14:13:10 2009] [warn] RewriteCond: NoCase option for non-regex pattern ‘-d’ is not supported and will be ignored. [Thu Feb 19 14:13:18 2009] [error] [client 202.160.178.137] File does not exist: /usr/local/apache/htdocs/html Can’t use string (“2.3”) as a HASH ref while “strict refs” in use at /usr/local/apache/htdocs/404.cgi line 159. [Thu Feb 19 14:13:18 2009] [error] [client 202.160.178.137] Premature end of script headers: 404.cgi [Thu Feb 19 14:13:21 2009] [error] [client 208.80.194.122] Failed loading /usr/local/Zend/lib/Optimizer/php-5.2.x/ZendOptimizer.so: /usr/local/Zend/lib/Optimizer/php-5.2.x/ZendOptimizer.so: undefined symbol: compiler_globals

I have no clue what this means, so if anyone out there can help that would be much appreciated ??