Hi,
I have exactly the same issue with a Netgear router. I am running NT (which I know uses .NET as I had to completely reinstall it when NT wouldn't run on one of my machines) so that could tie in with what waveslider said. However, my Netgear also performs and additional trick 'seemingly' at random points. It reassigns IP addresses which are already in use. So this sounds a little more like what Hal was talking about with the router's communication protocols. However, whether it be software, hardware or a combination of both, the problem is about a lack of understanding of the problem and the time it takes us to change that.
Windows is a pain but the majority of us use it. I know that there are traders who swear by linux, but not all trading platforms support it. Plus, you've then gotta learn a whole new OS with potentially its own problems.
The 2 actions which I am considering are:-
1)Getting a new router. I heard that the original Linksys routers were very good which is probably why Cisco bought them. Also, I found out that you can really improve them by changing the software on them.
Hack Attack: Turn your $60 router into a $600 router - DIY - Lifehacker
2)Gamers have internet issues too and although this may not solve the intermittent router issues, perhaps it will help get me back to a semblence of the kind of performance I had when connected through a fixed line to exchanges. This NIC ( Network Interface Card), bypasses the Windows Networking Stack completely and has its own processor onboard. Means the Net function should get as clogged up.
Amazon.com: Bigfoot Killer NIC 10/100/1000 PCI 400 MHz NPU RJ-45 USB 2.0 Retail: Electronics
We are getting into more complicated territory now however. Without a capable IT guy(and if you aren't yourself then how do you know?) or trading from an office of some sort of trading facility(who have their own IT), you have to do it yourself or think of something else.
I am thinking of those 2 options above, but a simple solution is to get a 2nd line in from your cable company or even get and additional one from an alternative provider. Then, plug in your trading PC directly and you can forget the damn router completely and don't have to worry about the traffic load on the line either. The cheapest solution would be just to buy a new router though. Not the one above necessarily. I felt that one would be good if I was going to reconfigure it myself. Without buying a high end commercial router, I believe the Cisco routers are very good.
Linksys by Cisco Dual-Band Wireless-N Gigabit Router WRT320N
Get a Gigabit one if you do though.(i.e.10/100/1000).
Anyway, just some thoughts that I'd already mulled over!!
jk.