Slow loading when Updating Content Blocks

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When I update a block on a page Concrete5 gets hung up on the loading gif and I have to refresh the page before I can edit another block or do anything else. Clearing the cache does not resolve this. Any suggestions?

Here is the site:http://www.silverspur-retreat.com/...

Here is my Environment Info
# ezCMS Version
5.4.2
# ezCMS Packages
Automatic Email Obfuscator (1.2.3), ezEVENTS (1.4), ezFAQ (1.0.0), ezFORM (1.5), ezSEO (1.1), ezWeather (1.0.2), Galleria image gallery (2.0), Gallery (1.7.0).
# ezCMS Overrides
themes/silverspur
# Server Software
Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8e-fips-rhel5 PHP/5.3.10
# Server API
apache2handler
# PHP Version
5.3.10
# PHP Extensions
apache2handler, apc, bcmath, calendar, Core, ctype, curl, date, dom, ereg, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, json, libxml, mbstring, mcrypt, memcache, mhash, mysql, mysqli, mysqlnd, openssl, pcre, PDO, pdo_mysql, pdo_sqlite, Phar, posix, Reflection, session, SimpleXML, sockets, SPL, SQLite, sqlite3, standard, tokenizer, xml, xmlreader, xmlwriter, zlib.
# PHP Settings

sketchyTK
View Replies:
ryan replied on at Permalink Reply
ryan
That may actually be an error occurring that prevents the success message from being returned, so the loader never goes away.

Any way you can look at the response from the post using your browser's developer tools?

Also you may want to check with your host and make sure they don't have mod security enabled. That frequently interprets posts containing allot of html as a security risk and would cause this behavior.