Internal Server Error on Upload

Hello all,
I just did a new install of Gallery 2 on a subdomain. When I try to upload photos from a local server I get the following error:

But if I go and look at the new album most, but not all of the photos are there. Some of the photos that are there have a broken thumbnail but I can click through to the picture. I have tried searching the forum and the wiki but I can't find my specific problem. I have seen that the size of the image may be an issue but images of 4.9MB are loading OK while some of those only 4.1MB are not.

When I look in the error log I see that there are "Image Errors" that say "Unable to build image" and there are "Gallery Errors" that give a path to my database followed by "/locks/397" or another number.

Any help would be appreciated. Thanks.

Gallery URL = http://www.carefree.elliottsnest.net/main.php
Gallery version = 2.3.2 core 1.3.0.2
API = Core 7.54, Module 3.9, Theme 2.6, Embed 1.5
PHP version = 5.3.27 cgi-fcgi
Webserver = Apache
Database = mysqli 5.1.56-log, lock.system=flock
Toolkits = ArchiveUpload, Exif, Ffmpeg, ImageMagick, NetPBM
Acceleration = none, none
Operating system = Linux elli 2.6.32.45-grsec-2.2.2-r3 #8 SMP Mon Oct 10 13:33:17 PDT 2011 x86_64
Default theme = matrix
gettext = enabled
Locale = en_US
Browser = Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Firefox/24.0
Rows in GalleryAccessMap table = 12
Rows in GalleryAccessSubscriberMap table = 54
Rows in GalleryUser table = 2
Rows in GalleryItem table = 54
Rows in GalleryAlbumItem table = 4
Rows in GalleryCacheMap table = 0

Thanks for the response. After I changed the lock type to database, I deleted the album where I was having the problems. I got the following error:

But the album was gone. So I recreated the album and tried to add the photos back. I got the same error I got the first time I tried to upload pictures and again, only 50 of the pictures uploaded, some did not have thumbnails created. And now when I go into the event log I am getting some ERROR_LOCK_TIMEOUT errors.

Thanks for your help. This is the first album I am trying to upload to this Gallery.

Thanks Dayo. I don't know if I have the required level of access but I couldn't understand what was needed anyway. I was trying to add photos while I was on my VPN and when I turned that off, Gallery was able to grab the pictures from the local server. It uploaded all the photos but did not create the thumbs for some. When I rebuilt the thumbnails for the album I got the same Internal Server Error. And this is with the VPN off. I'm not sure what is going on but it is happening no matter where I am connecting to the internet (home vs work). My host is DreamHost which offers Gallery as one of their simple installs so I can't imagine it's a problem on their end. Or is it?

Thanks for the help.

Thanks suprsidr. I have unlimited bandwidth and unlimited storage so I'm not sure what else I can purchase.

I am running PHP 5.3.27 but I have the option to upgrade to 5.4.x CGI or 5.4.x fastCGI. Would that help? Would it hurt? Should I pick the CGI or the fastCGI option? Thanks to all for taking the time to help with a very annoying problem.

The best thing you can do is to stop uploading huge images.

There is no scenario where it makes sense for either you as site owner or for visitors to your site.

Forcing visitors to endure a 5mb download per page is terrible practice.

Resize your images on your local machine before uploading. They should generally be no more than 250kb each.

You probably have a thousand times more RAM available on a basic laptop to do the resizing than on a typical shared web hosting account.

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dakanji.com

A shared hosting account and a php app like G2 are poor choices for a image backup setup.

Good luck though.
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dakanji.com

I'll go for a portable hard drive in your office desk drawer.

Hard to beat on cost and reliability.
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dakanji.com