My web hosting service provider on the apache server is set up Litespeed
I use joomla 1.7.3 and now no longer using the gallery plugin Simple Image Gallery Pro v2.5.6 (by JoomlaWorks) (jw_sigpro) does not work if only one image is too large. For example 3 images at 70 K  the gallery will operate But if  200 k image in the gallery and the gallery  causes a blank page in normal mode and the following error in debug mode

Fatal error: Out of memory (Allocated 52,953,088) (Tried to allocate 15488 bytes) in / home / artetpho / public_html / portal / plugins / content / jw_sigpro / jw_sigpro / includes / helper.php on line 196

No other plug-in or extension is affected by the introduction of Litespeed ...
www.litespeedtech.com/

Il like your plug-in but  i would solve it  !!

If this is due to a memory size limitation you must contact your hosting company and ask them to increase it in your server.

Thank for your reply , i have also contact whith my  web hosting service provider but  no repply actually ....
but it is strange that this insufisance memory takes place only with the pluging of the gallery. Indeed I can see in pictures of items larger than 2 MB free memory that occurs insufisance

Good news !! it's solved by  my hosting service provider ..!!  (Planet Hoster)
he put one  file htaccess in the folder /plugins/content/jw_sigpro/jw_sigpro/includes
with this command ..  "php_value memory_limit 256M"
It's nice  and galery work very fast now ...
Thank for  your interest to my problem...