From some days i have this error



This is in the code on the check spam users from http://www.stopforumspam.com.
I have not modify nothing.

My verision:
core 2.5.6
php 5.4.23
mysql 5.0.92

You have an idea what could have happened?
Sorry for my terrible english.

After update at version 2.5.7 the error is same.
Please can you help me?
Thank you!

Let me ask a couple of questions.

How much traffic does your site get per day?

Has that number increased lately? You might have to check your hosting provider logs if they keep that information for you.

I've taken a look at this, and there seem to be a few things about that way we are using stopforumspam.com that should be fixed. It is possible that if you have enough activity that your site IP gets flagged by stopforumspam.com and it stops sending the information. If it returned an error message instead of the formatted response we expect, that would cause your error.

It appears that we are checking every post, and we are not doing local caching

If a site gets a lot of post traffic it could easily get flagged with the current setup. This article is specifically about a Drupal mod, but the issue sounds similar:

http://www.stopforumspam.com/forum/viewtopic.php?id=5136

This might take a little while to solve. Does anyone else have similar issues?

Also, if your site is on shared hosting, it is possible one of your 'neighbors' is a spammer, so your server IP is banned?

We really do need some better error checking and reporting for this in protector.

Thank you for answers, i don't have much traffic, 400-500 users to day, nothing increased. I don't have particular errors in server log.
Yes i have a shared hosting,is it possible that this is the problem.

If this not depend from my site, no problem .