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If the web-site does not appear from any computers, this may be a problem with the server. It could also be a temporary internet outage, a problem with DNS services, or an expired domain that has been "parked" by the internet registration authorities while they await payment or renewal. Please contact us immediately if this happens and we will rectify the problem. We sometimes run into instances where the web-site will display on some machines and not on others. These are generally either due to browser issues or network issues. If you suspect a problem is related to a particular browser or browser version, please check our list of supported browsers. We will keep this list updated with issues that we are aware of. Other issues we're aware of are explained below. Probems with DSL and PPPoE If you are running a DSL connection, and find that your site does not load, displays inconsistently, or sometimes goes to a blank screen, this is likely a problem with your MTU settings. The reason these issues occur is to do with an inherent flaw in the way PPPoE works as a protocol (and sadly, an essentially unfixable one). To understand the specific issues with MTU sizes and DSL, there is an excellent technical discussion of the problem here: http://adsl.cutw.net/mtu.html Most DSL providers are very well aware of this issue, so contacting them should be your first step. They may well have a procedure well documented explaining how to resolve the issue. We have found that some DSL internet providers do not support MTU Path Discovery, a protocol that relies on the client machines and our web-server being able to reach one another via the ICMP protocol. If our server cannot communicate with the client, they cannot negotiate an MTU size, the client machines will normally assume a MaxMTU size of 1500 bytes. (an ethernet ethernet frame is normally 1518 bytes - 1500 bytes for data and an additional 18 bytes for information needed by the ethernet protocol) The "Maximum Segment Size" is the largest packet that a client is allowed to receive. This will be the MTU size less 40 bytes. You can test the largest packet you can send by open up a command window and using the Ping command. One Windows XP and Vista, the ping command below will help you explore the largest packet size that you can send from your machine without packets fragmenting. ping -f -l 1472 neatworx.com One of the easiest fixes for this problem is to Download Dr. TCP from the site below, and change the Maximum MTU setting to a slightly lower value - usually making it 20 bytes less is sufficient although you may need to experiment. http://www.dslreports.com/drtcp An alternate procedure that does not require Dr. TCP is described below
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