3com Wireless internet connection.

Look at the log in the router and see if there is any unusall amount of packets being sent. I went thru this with a client that had 25 machines and it turned out to be a machine with a virus or bad nic card once that machine was removed from the network it stopped. It was sending out so many packets that it was like a denial of service attack and the router would shut down till it cleared

So you have a wireless router powering itself off at random intervals?

Change the power adapter if you have an extra.  (Just for grins.  You never know.)

I would also look into new firmware revisions for your router's model on 3com's site.  There could be packet blockage or any other random number of issues that are causing the router to reboot itself.  (There are plenty of routers out there designed to reboot themselves if they detect certain issues.)

If the issues persist...  Try running the router on it's stock settings for a few days to see if it continues.  If it runs ok with stock settings, then perhaps there is a certain function or feature you are using that the router is not handling too well.

There have also been certain routers that have been identified as having certain issues with either the hardware your ISP gives you or the settings your ISP is using for your connection.  A sudden change in the way your ISP is doing things could suddenly mean issues for your connection if you're using a router that doesn't like it.

Example: I was once using COX cable internet in Omaha a couple of years back...  Being that Nebraska is notorious for it's fandom when it comes to the Huskers...  Cox decided it would be a great idea to use multi-cast packet broadcasting to transmit the game over the internet.

BAD IDEA.  Anyone in that service area who had a Linksys BEFSR41 router could not maintain connectivity for more than 10 minutes without a reboot.

I later found out from a good tech friend of mine who worked for COX at the time that the issue was definitely widespread and the effects were immediate and lasted throughout the course of the entire game!  (Man I was NOT happy!)

According to him, the problem was the method they were using to send out the multi-cast packets.  They had set the frame sizes too high.

Ahem....  Anyway... You get the idea.

But check into updating your router's firmware anyway.  That's always a good place to start.  :)

Cyryl