Website loads blank pages

Sometimes instead of web pages with data, you only see blank web pages.  Some of the reasons for this could be :

1) The PHP code does not execute mid-way through rendering the page server-side so it crashes returning null headers back to the client browser.
2) The server the website is running on has no memory left to process the request , this is an intermittent problem.
3) The  website is running on non-server grade hardware that does not have ECC RAM and/or production grade CPUs  with adequate capacity. So whenever there is memory corruption or bad bits the Apache process fails midway.

In each case, you can try again after some time.

Broadband connection

If you have a broadband connection through a LAN , sometimes  the connection may suddenly stop working.  If you ping the default gateway, you will get the error message,  operation timed out. It usually resumes working automatically after some time.

One way to troubleshoot this problem is to unplug the ethernet cable and connect it back again.  If this does not work, disable the LAN connection from the network settings and enable it again.

Slow internet connection

If your internet connection has become very slow and MSN and other programs do not work, it is because the IPV6  Teredo pseudo tunelling interface is installed.

Go to the DOS prompt and type ipconfig/all.

This will give details of your network connections and ip address, which will be in the following format.

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::ffff:ffff:fffd%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Automatic Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Automatic Tunneling Pseudo-Interface

Physical Address. . . . . . . . . : C0-A8-01-66
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:192.168.1.102%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled

Since not much is known about IPV6, it is advisable to uninstall it.You can uninstall Teredo by opening the command prompt and typing:

IPv6 uninstall

You will have to restart the computer after this.