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Well the only type of DSL modem Walmart offered was the Netgear N300 (DGN2200) ADSL2+ modem/router combo. I hate Netgear products in general, so I cringed when this was the only option. What are you going to do though right?
Anyway, I brought this home and noticed right away that this sucker would get burning hot after only 30 minutes of use. It would also randomly reboot itself throughout the day. I upgraded the firmware like a good boy, but that didn't help. I contacted Netgear support and they sent me a replacement. Well, the replacement had the same issue. It's clearly a flawed hardware design.
I called Netgear support again, and this time they sent me the DGND3700v2 unit. It's only been about two days, but I this one is not hot to the touch, and I haven't noticed any reboots on it.
Long story short, Don't buy the DGN2200, spend a few extra bucks and get the DGND3700 instead. Or better yet, get a Cisco product!