@M.C.  that's quit a list.  Am I correct that all are Enabled?  If so here is what works for me.  First elgg will place the news plugins at the bottom by default, start by disabling each one at a time, dumping the simplecache and starting simple cache back up each time.

Now I can tell you you may have some plugins located wrong, example is to keep like minded plugin together like blog and place blogextended just below it.  walltowall just under messageboard, I group all my profile related plugin together.  Keep custom_index either very top or very bottom.

I understand a lot of plugin developers say to place the plugin at the bottom, but not every plugin can have this position.

Make sure garbagecollector and logrotate are set to weekly and force a cron clean up.  www.xxxxxx.com/pg/cron/weekly.

Now my advice is do as I say not as I do because you have so many plugin I would conside which ones you realy need, your site will be much faster.

Hope this helps

Hi Goofbucket

Thank you for helping me. I tried the cron and minue i turn off the simple cache, all css goes off.

I disabled all plugins and its still the same.

Strange its happening with all plugins disabled.

The minute i click enable simple cache, site loads normally

Im debugging and making changes so i need to disable caching

What could be the issue

so your java is back, and yes this is an issue with simplecache, and I am sorry but probably over my head. Do a search on simple cache and you should find the right thread with the right people.  sorry I could not help more.

According to Dave's message here:

http://community.elgg.org/mod/groups/topicposts.php?topic=24077&group_guid=23300

We have replaced the old activity river with a new one, so, your existing river items will no longer display and the activity plugin has been retired.