I upgraded to the latest version, then i had over 18 plugins needs update.
I was updating the plugins then i got this error
After that i had problems with my web host, they suspend my account
my account was pushing load on the server with dual xeon CPUs, etc..
Anyways, i have upgraded my hosting plan to Cloud VPS.
Now the site is working again, but i am having this Error 500 Internal Server
in main page and profile pages
it has to do with an error with one of the system_plugin
See screen shot