Apache problems

[Roger]

Using Fedora 19,  Drupal, PHP, ruby, Rails, etc.fully updated.

Apache died again for me today and I do not understand why. It has not 
done this for some time.
I develop in Drupal, and Rails 4 mainly.
I have a test index.html file in /var/www/html all the drupal apps also 
in /var/www/html/ no index.php files outside the drupal directories.

All was good yesterday but today I get errors indicating that apache has 
failed, I think.

mysql is running, info.php shows all ok with Apache2.0 handler

When I run index.html  or other files, it sends that file to /Download, 
which is getting quite annoying.  I don't want files sent to /Download. 
Haven't figured out what's causing this.

Run localhost/sandbox, a drupal testbed I get: The website encountered 
an unexpected error. Please try again later.
PDOException: SQLSTATE[HY000] [1045] Access denied for user 
'meuser'@'localhost' (using password: YES) in lock_may_be_available() 
(line 167 of /var/www/html/sandbox/includes/lock.inc)

I have checked:
  /etc/hosts
/etc/httpd/conf/httpd.conf
.htaccess in /var/www/html. Don't know why drupal needed a.htaccess in 
/var/www/html so I renamed it temporarily but that did not help.
Nothing seems to have changed.

The only other thing I have done is install AngularJS and NodeJS 
yesterday afternoon to have a go at Angular web development.
I have working AngularJS files in /var/www/html/Stuff/ and each has it's 
own .htaccess file. but Angular does not rely on apache as I understand 
it. I had altered the .htaccessfile in the AngularJS file.

Yesterday I was swapping between Drupal, AngularJS and Rails and each 
worked.

Checking my system I have stopped apache  then enabled and started 
apache, have cold rebooted.
journalctl -xn shows:
-- Logs begin at Sat 2013-07-06 16:12:11 EST, end at Fri 2014-01-24 
22:51:40 EST. --
Jan 24 22:49:08 localahost kernel: perf samples too long (5006 > 5000), 
lowering kernel.perf_event_max_sample_rate to 25000
Jan 24 22:50:07 localahost gnome-session[1975]: Window manager warning: 
CurrentTime used to choose focus window; focus window may not be correct.
Jan 24 22:50:07 localahost gnome-session[1975]: Window manager warning: 
Got a request to focus 0x2000027 (Database c) with a timestamp of 0.  
This shouldn't happen!
Jan 24 22:50:10 localahost dbus-daemon[527]: dbus[527]: [system] 
Activating via systemd: service name='org.freedesktop.hostname1' 
unit='dbus-org.freedesktop.hostname1.service'
Jan 24 22:50:10 localahost dbus[527]: [system] Activating via systemd: 
service name='org.freedesktop.hostname1' 
unit='dbus-org.freedesktop.hostname1.service'
Jan 24 22:50:11 localahost systemd[1]: Starting Hostname Service...
-- Subject: Unit systemd-hostnamed.service has begun with start-up
-- Defined-By: systemd

Unit systemd-hostnamed.service has begun starting up.
Jan 24 22:50:11 localahost systemd[1]: Started Hostname Service.
-- Subject: Unit systemd-hostnamed.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit systemd-hostnamed.service has finished starting up.
-- 
-- The start-up result is done.
Jan 24 22:50:11 localahost dbus-daemon[527]: dbus[527]: [system] 
Successfully activated service 'org.freedesktop.hostname1'
Jan 24 22:50:11 localahost dbus[527]: [system] Successfully activated 
service 'org.freedesktop.hostname1'
Jan 24 22:51:40 localahost gnome-session[1975]: Window manager warning: 
last_focus_time (5567071) is greater than comparison timestamp 
(5567070).  This most likely represents a buggy client sending 
inaccurate timestamps in messages
~

  tail httpd_error_log
[Fri Jan 24 22:01:17.180653 2014] [core:notice] [pid 3752] AH00094: 
Command line: '/usr/sbin/httpd -D FOREGROUND'
[Fri Jan 24 22:01:33.467519 2014] [:error] [pid 3754] [client 
127.0.0.1:46846] script '/var/www/html/index.php' not found or unable to 
stat
[Fri Jan 24 22:04:42.165557 2014] [:error] [pid 3753] [client 
127.0.0.1:46847] script '/var/www/html/index.php' not found or unable to 
stat
[Fri Jan 24 22:22:43.448619 2014] [:error] [pid 3761] [client 
127.0.0.1:47205] script '/var/www/html/index.php' not found or unable to 
stat

Do not understand why it's looking for index.php this could be something 
in /etc/httpd/conf/httpd.conf - but what?

Can someone please advise me in fixing this apache issue more permanently.
thank you in advance
Roger