Unable to upload larger pictures

i just added the ability for my customers to upload their images to me from a gravity form. I tried testing it with normal sized pictures (1.5 MB each) and tried uploading just 6 of them and it never sent. I left it go for about an hour and it was still spinning. I then tried to stop and go back but it wouldn't. I then closed down the tab, reopened another and tried to go to my homepage and nothing would come up. Eventually, I got "Unable to access database" to come up on a blank white page. I called Bluehost and they said it was most likely a plugin problem. Any ideas? I really need this functionality. Actually, I'd prefer to be able to do multi-upload where it resizes all the pictures and renames them, but I know that's asking for a lot.

Where would I find the php log?

If yo are using bluehost I had a similar issue with a client php upload limitations (using PLIGG), Back them I think bluehost set it at 2 meg. Go to your .htaccess file and place this code in it, on the top lines.

php_value upload_max_filesize 15M
php_value post_max_size 15M
php_value max_execution_time 200
php_value max_input_time 200

Save the updated .htaccess file. then view your site and try things out you should be all set. If for some reason you get a Internal Server 500 Error, that means the hosting provider has place a php_value restriction on there .htaccess files, remove code an your site will return, then contact your hosting provider and request a change, Some will accommodate, but many will only increase to 8 or 10 meg, depending on your type of account, so just be aware of this.

Good Luck