منتدى استراحات زايد - Issue with image upload in posts

In my forum (solarthermalforum.org) hosted on hostmonster, there is an issue with uploading images in posts. I have been talking to vBulletin support for more than a week now, however no results...

Some background info

Error log does not show any errors when uploading
Host says They said mod_security is always disabled
Tried to re-install vBulletin completely with new database
Below is some additional info

Pertinent PHP Settingsfile_uploads:Onopen_basedir:Nonesafe_mode:Offupload_tmp_dir:home1/solarthe/public_html/tempupload_max_filesize:64.00 MB
No errors occurred while opening the uploaded file for reading.

SuhosinModule LoadedNo
mod_securityAJAX Unicode IssueYes
ResultsThe above setting will indicate if mod_security is preventing some AJAX requests from being submitted to vBulletin. If this shows Yes then you either need to disable mod_security or change the AJAX settings with the vBulletin Options and disable Problematic features.

The mod_security module is not loaded in any of hostmonster servers. Here is a
listing of the apache modules that are installed on your server:

[email protected] [~]# httpd -l Compiled in modules:
core.c mod_authn_file.c mod_authn_default.c mod_authz_host.c
mod_authz_groupfile.c mod_authz_user.c mod_authz_default.c
mod_auth_basic.c mod_auth_digest.c mod_file_cache.c mod_cache.c
mod_disk_cache.c mod_mem_cache.c mod_case_filter.c
mod_case_filter_in.c mod_ext_filter.c mod_include.c mod_filter.c
mod_deflate.c mod_log_config.c mod_logio.c mod_env.c mod_expires.c
mod_headers.c mod_setenvif.c mod_version.c mod_ssl.c worker.c
http_core.c mod_mime.c mod_dav.c mod_status.c mod_autoindex.c
mod_asis.c mod_info.c mod_suexec.c mod_cgid.c mod_dav_fs.c
mod_negotiation.c mod_dir..c mod_actions.c mod_userdir.c mod_alias.c
mod_rewrite.c mod_so.c