I have had problems with posting to Forum v. 1, bundled with XOOPS 2.0.13.2. It appears that slight changes in the content of a post will result in what appears to be a permissions error.

For example--the following post goes through fine:

"The process of uploading just one photo at a time is a kind of gentle reminder to people to be more selective in sharing their pix with others. My first urge was to upload 30 or so photos."

But when I add on "from our trip", thusly:

"The process of uploading just one photo at a time is a kind of gentle reminder to people to be more selective in sharing their pix with others. My first urge was to upload 30 or so photos from our trip."

I get a "Forbidden: You don't have permission to access /modules/newbb/post.php on this server" error message.

And in fact, when it ends "...photos fro" it's OK; when I add an "m", making it "...photos from", I get the error.

Stranger still, changing the "m" to another character, eg. "...photos frog", causes no errors. So it's not some kind of overflow problem.

Umm, I just noticed that the module itself is in a directory called "NewBB", although hitting the "info" icon in the module admin section describes it as "Forum v. 1".