20Mhz or 40Mhz Channel Width Router Setup?

I had some connectivity problems with my router setup, I’m running two dlink routers as repeaters basically between rooms and floors in my house. Ping between these was really erratical 1ms 1ms 3ms 567ms and so on.

I was running 40Mhz channel width on the n-band.

Even though the theoretical troughput on the routers went down by half from 300 to 150 I still get a much better performance on the link route when i selected 20Mhz.

So, if you are having problems with the wifi signal jumping over many routers, try going 20Mhz on the bandwidth! Let me know your mileage!

The question of the sagging floors in the WTC.

Something just came to mind that I cannot explain. Maybe someone with structural engineering skills kan explain this to me.

According to NIST, as far as I’m right here, part of the collapse of the twin towers was the fact that the floors sagged due to heat, and this pulled in with considerable force on the outer columns.

Can someone please explain to me how a sagging (softer) floor can pull more inwards on a perimeter column than a straight one? We are not adding any force to the floor, it just expands as it is no longer as rigid. The load on the point where it is connected to the perimeter column must be the same.

Of course it would be different if the sagging was due to added weight (downward force) to the floor, but this is not the case.

If i hang a narrow line between two small trees and I grab onto it and hang, it gives way and there is some pull on the trees as well as some sag in the line. If I do the same with a thicker line it does not give way that much, but shouldn’t the pull on the trees be the same? They are supporting the same weight. (Mine)

I cannot wrap my mind around this theory. I bet it has something to do with vectors though

Help

Delete stubborn impossible registry key! Solution / Fix

Trying to delete a stubborn registry entry, i finally found this solution:

It´s really powerful so must be used with a great amount of caution. It deleted the stubborn key instantly.

Under Administrator execution of the Command prompt, enter: psexec -s -i regedit

This will run regedit from the System account.

psexec can be found at:
http://www.microsoft.com/technet/sysinternals/utilities/psexec.mspx

psexec’s normal use is to remotely interface other systems but it just happens to be able to run things like regedit from the System account.