Phusion Passenger and missing passenger_native_support.so issue

When upgrade an Rails application from Ruby 1.9.3 to 2.0.0 by using rvm, it throws out error as:

Raw process output:

 --> Compiling passenger_native_support.so for the current Ruby interpreter...
     (set PASSENGER_COMPILE_NATIVE_SUPPORT_BINARY=0 to disable)
 --> Downloading precompiled passenger_native_support.so for the current Ruby interpreter...
     (set PASSENGER_DOWNLOAD_NATIVE_SUPPORT_BINARY=0 to disable)
     Could not download https://oss-binaries.phusionpassenger.com/binaries/passenger/by_release/4.0.48/rubyext-ruby-2.0.0-x86_64-linux.tar.gz: Resolving timed out after 4516 milliseconds
     Trying next mirror...
     Could not download https://s3.amazonaws.com/phusion-passenger/binaries/passenger/by_release/4.0.48/rubyext-ruby-2.0.0-x86_64-linux.tar.gz: Resolving timed out after 4516 milliseconds
 --> Continuing without passenger_native_support.so.
/usr/local/rvm/gems/ruby-2.0.0-p451/gems/json-1.8.1/lib/json/common.rb:67: [BUG] Segmentation fault
ruby 2.0.0p451 (2014-02-24 revision 45167) [x86_64-linux]

It turned out the passenger_native_support.so was missed in rvm /usr/local/rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/x86_64-linux/ folder.

So searched and found it in /usr/lib/ruby/2.0.0/x86_64-linux-gnu/ then copied it to /usr/local/rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/x86_64-linux/

Drupal 7.3.1 crashes with eAccelerator 0.9.6.1

When deploy a site which was built on Drupal 7.3.1 on CentOS 6.5, it crashed with an error:

"Fatal error: Cannot create references to/from string offsets nor overloaded objects in /var/www/drupal/includes/errors.inc on line 184

That's interesting.  So I've commented out that line ($test_info = &$GLOBALS['drupal_test_info'];) and the app continues working but the come with some other strange behaviors like the URLS are pointing with querystring parameters such as http://drupal-site.com/?q=careers instead clean URL like http://drupal-site.com/careers
or
Fatal error: Cannot use object of type ctools_context as array in /var/www/drupal/sites/all/modules/contrib/panels_everywhere/plugins/tasks/site_template.inc on line 103...

Then I've tried to setup a new Drupal 7.3.1 site from scratch and it worked pretty well. It looks like some extra modules like contrib caused the problem.

Finally I noticed there were bunch of errors "child pid xyz exit signal Segmentation fault (11)" in the /var/log/httpd/error_log so I found out why and tried to disable eAccelerator (the latest 0.9.6.1 - which is required by the Dev team) and the app works again.

Then I enabled it and the app was still working... until sometimes later it crashed again - looks like the cached was expired?

So finally I've asked the Dev team to switch to the APC for alternative.