Could you email me a link to the forum so I can take a look?

Have you modified PunBB in any way?

So your forum is at
http://www.mysite.com/forum
And the file is at
http://www.mysite.com/forum/12_to_1214_update.php

I assume this is happening on your server? I'd talk to your host if that's the case, see if they know what's up

Moved to Modifications

Then you need to talk to your host and ask them for your MySQL details wink

Yes, I'm familiar with what the install form looks like wink

Why don't you try creating a folder named forum in the "root folder" and moving all the PunBB files there? That way the paths will turn out the way you wanted.
As for the database hostname, you can try localhost. If it doesn't work (or you have no idea about the other settings) you need to ask your host

http://www.suffns.org.yu/forum/
You don't even have a forum folder in your website. You can't just name a random folder forum and expect it to work.

What should I have installed on my computer? Maybe that could be a reason of my problem? I don't know.

There's nothing to install on your computer: all you need is the ability to upload files

You say that I have to make directory forum/upload and than copy all contents into?

No.
You download a copy of PunBB. Within it, there is a folder called upload. You want to upload the CONTENTS of that folder to somewhere on your website. Then, you simply browse to the place on your website that you uploaded the files to.

One more question. Do I have to copy on var/www/html ?

You have to copy the files to some place that you can view from the Internet wink

You uploaded the files into the /forum/ directory? Not into, say, /forum/upload/?

Moved to Modifications

update_forum function in include/functions.php

4,264

(3 replies, posted in PunBB 1.2 troubleshooting)

Sounds like search engines spidering your forum tongue

And it is added in 1.3 as far as I can see: check for yourself tongue
As I said, PunBB.org runs an unmodded copy of PunBB: you're not going to see a mod installed on this forum tongue

4,266

(2 replies, posted in PunBB 1.2 bug reports)

I'm moving this to Bug Reports and closing it: we already know (and it's nothing more than an annoyance)
If anyone is curious, the issue has to do with certain special characters causing display to look slightly odd wink

4,267

(11 replies, posted in Feature requests)

This should also be possible in PunBB 1.3 with an extension (say, one that controlled avatar permissions for a usergroup)

Moved to Feature Requests
punbb.org runs an unmodded copy of PunBB, so this would have to be a feature request
And this has been done in 1.3, or so it would appear to me wink

Moved to Integration

There are various ways to do what Rickard is trying to do, which is integrate users from PunBB with trac without modifying PunBB:
http://www.trac-hacks.org/wiki/DbAuthPlugin | You'd need to maintain a Trac auth table in addition to a PunBB table
mod_auth_mysql for Apache is another possibility, assuming you have access to a version which supports the password hashing you're using

4,270

(2 replies, posted in Feature requests)

In 1.3 it looks like the p's become li's with unique IDs wink

PunBB's tables have names like users, posts, etc. You can set a db_prefix (set in config.php) which is prepended to table names, allowing for multiple installs in one database. So, if pbb_users is your PunBB users table, you need to edit your config.php file and set $db_prefix to pbb_

It sounds like you didn't move the users table

The higher number in select_full_join is caused by the poorly optimized query: again, until you can figure out why your setup messes up the way it does, there isn't really an easy fix

Well, I'm not sure what to tell you then wink

MySQL is still not optimizing the query properly: I'm not sure why hmm
Are you sure you didn't mess with the MySQL setup between when you ran the first explain and when you encountered this odd behavior?