I’ve been experiencing quite a few permissions issues with WordPress since I upgraded my server to run PHP 5. There are a lot more ‘security’ features present in PHP 5 which prevent things like the Apache user (which is used to run the scripts by the Apache webserver) accessing directories it doesn’t own etc. To get WordPress to work properly in all respects I had to change ownership of all the scripts and directories so they belonged to the Apache user and group, but this caused other issues (namely I couldn’t copy the files for backups etc.).

I’ve since tweaked the ownership slightly such that the scripts are owned by my control panels FTP user and the Apache group and so far, it seems good… that said I haven’t tried to upload any pictures recently.

You also mentioned your PHP memory configuration in that it’s set to a limit of 64MB… but did you also spot the statement about the 3 mega-pixel size limit? If you’re uploading straight from say a good digital camera, it’s possible the image blows this limit away so you may have to resize the image first before uploading it. That said, I do have some panoramas on my site which are huge (if they don’t break the 3MP limit I’d be surprised) and they got handled without a hitch.

The best thing I can suggest is that if you are running on your own server and you’re happy to tinker with permissions, then try that. Other than that, without the access and error logs from your system, it’s almost impossible to say. If you can get those then have a look through them to see if there are any clues in there.

Good luck, and if you do need more help, don’t be afraid to ask.

Regards

Athena

thanks for the post… very good information…

I have the same problem with thumbnails not being generated… but my memory is set to 64MB the variable inthe PHP.ini file is memory_limit.

do you know of any other causes?

Thanks for the great post…!

Sincerely,
Jay