The “post” button is being squished by either an html tag or css. The plugin has no impact on the “post” button. If you post your original, and new, comments.php code to http://pastebin.com I will take a look to see if I can find the error. The problem may originate in the class=”form-submit” css.
Also, turn off other comment spam plugins like Akismet since they will produce false positives.
1. Make a backup copy of your comments.php file
2. Go to this link, http://pastebin.com/ZRta5U4S, and use the code in the “RAW Paste Data” section to replace all the code in the comments.php file.
Hmm darn that didn’t seem to change anything, sorry!
I should have looked closer at the code from your comments.php file. It appears you are using the Atahualpa theme framework, and the comments.php file you posted is not the original file code.
In testing Atahualpa 3.7.1, the current version, Spam Free WordPress works automatically without any changes needed to the comments.php file. To fix your problem upgrade your Atahualpa to the current version, or install the original comments.php file for your version.
http://themes.svn.wordpress.org/atahualpa/
http://wordpress.org/extend/themes/atahualpa
Oh! Yes, that solved it! Upgrading to the 3.7.1 worked. Thank you sooo much for all the help!