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[Felyrion]

I have my DIR-655 for a year or so I think. Never had any big problems until I recently decided to upgrade the firmware because one of my roommates was having speed issues.

I wish I had never done this  I'll try to describe what's going on here.

This is the situation:
We have a cable modem connected to our DIR-655 (Hardware version A2), and connected to the router there are about 10 devices (3 pc's, 3 laptops, and some other devices like phone's and a ps3).
There's one download pc continuously up/downloading, and the other devices just use internet, msn, etc.

The problem:
Until the firmware update virtually none. One person seemed to have problems that look like packet collisions, but we never found out why. This is why I decided to upgrade the firmware, I saw some new features that might have helped.

So I upgraded to 1.31EU.

And since then we are having this strange problem. The whole day when there is only one or maybe 2 devices active on the network, there is no problem.
But as soon as there are some people at home trying to download things, etc. the router randomly resets itself. It starts from scratch, rebuilding the connection, giving everyone their IP's, even starting over the LOG file (sadly, so i can never see what happened just before the reset).

The router will do this anywhere from every minute to 30 minutes on peek moments.

The question:
Does anyone have any idea what this might be?
I'm a IT professional and I have tried about everything. I'm losing hope of fixing this myself, so thats what this topic is for

Oh, and one other thing that caught my attention was the extreme speed the logfile seems to grow. How many entries (INFO messages etc.) per minute/second is normal?

[EddieZ]

Tried reflashing with the same version and a manual config (instead of the restore feature)?

[Felyrion]

I have not. I'll try this and report back 

In the mean time: can anyone tell me how many INFO messages per second/minute they get in their log?
(like [INFO] Wed Feb 17 02:57:30 2010 Blocked incoming UDP packet from *** to ****)

There seem to be some strange peeks in my logs I can't explain. (i'll post them soon)

[EddieZ]

The router is doing its job (firewall), so the number will vary. If you use torrents it will skyrocket 

[Felyrion]

Torrents are always on. There's no difference between the "peak" hours and the "slow" hours.

Right now most people are asleep, Torrents are running, and this gives me a log that looks like this:

1875 "Blocked" messages in 85 minutes
this gives me 0.37 messages each second

The log from this afternoon (when I noticed about 10 reconnects occur) looks like:

969 "Blocked" messages in 19 seconds
this gives me 51 messages each second

That sounds extreme to me, and I'm guessing the source of the problem can be found in this.

The main question I have is: what is the difference between the original firmware and the last wich makes this happen? (and ofcourse... how do I solve it  )

[EddieZ]

There have been numerous threads/discussions about this. Not once the router has been at fault here. Either you're popular with digital burglars, you have malware on your PC or your firewall settings are too tight. What are they set at?

[Cobra]

I would think it is the torrents when a peer drops off.

[Ronneske]

is it an option for you to try 1.33NA FW version?

On my A4 must more stable then all the others.

[alien]

you have no warranty on your router if you go from eu version to NA version. Look out.

[Ronneske]

you can go back so no problem.

[alien]

not if your router crashed.
and i tested many firmware myself and i got the beste connecvtion with eu firmware on my eu router version A2. This routers are limited with torrents, and that is what the most problems is with the people is that they dont know how to do it because they read no manual.