I am running WordPress 3.4.1 on a Dreamhost shared hosting plan and was attempting to create a slideshow with the Portfolio Slideshow Pro plugin, which uses (and extends) the standard WordPress Gallery to manage its images and metadata. It had always worked well until I attempted to create a slideshow with 119 images. The uploader allowed me to upload all 119, and the editor allowed me to save metadata (Alternate Text, Description, etc) for each image up to 100, but when I attempted to add metadata to image 101 and clicked "Save all changes" it silently failed. It behaved just the way a successful save would in that it refreshed the list and collapsed all the expanded image sections, but when I went back in to verify the data was saved, it was not.
I posted a support ticket on the Portfolio Slideshow Pro forum here: http://madebyraygun.com/support/topic/not-saving-metadata-for-gallery-images-over-100/ and they had me try a few things, one of which was trying to upload over 100 images to a standard WordPress page that was not using the extended features of the plugin. I tried this and the same behavior occurred. I also disabled all other plugins, increased the memory limit to 96M and enabled WP_DEBUG and found that there were no relevant errors logged.
I put in a support ticket with Dreamhost in case this is a hosting issue, but it feels like the fact that it is being consistently limited to exactly 100 must be something in the code, intentional or otherwise.
Anyone encountered this before? Any thoughts? Thanks,