My First MacBook Crashes The Entire Network (Router) for Everyone?

Hi,
I've spent the past 2 days on my first MacBook ever, struggling to keep the Internet active.
I've never had this problem before and it started when I brought this new MacBook home.
Basically what happens is when I start up the MB and it automatically connects to the Wireless Network, the entire Internet connection (router) drops and crashes and the only way to restore it, is to shut down the MacBook and thereafter reboot the Router.
If you start up the MacBook again, the same events follow; massive internet crash across the network and then you hear people screaming and shouting that the internet crashed.
I've done plenty research, and nothing seems to work.
I've found a bit of information on MTU and modifying the values. In the 2 days I've had this Mac, I've tried every value below 1500 on the Router and MacBook, (including 1492; 1400; 1352; 1450 etc) and can't keep the MacBook to save the Value under Ethernet?? Is this a Snow Leopard bug? When it does decide to save; it resets back to Manual - Standard 1500. It's frustrating, because I moved from Windows to Mac to get away from bugs and incompatibilities and guess what; First day I encounter massive inefficiencies due to Mac
I've had a little success; when the Mac does save the MTU in Ethernet for a session (not permanent after a restart for some weird reason); I am able to browse the internet for 10 - 20 minutes though another Access Point on MTU Values on 1420; 1428; 1436 and thats it. The internet crashes.
I've also tried to disable IPv6 and manually set DNS servers and IP's (automatic/static). No success.
Please help, this is not the greatest introduction to the Mac life, and I want is the internet connection to remain stable for everyone.
My Hardware is as follows:
MacBook Air (2010) 265GB
DLINK DSL-2650U Wireless G ADSL2+ Router
Any help is greatly appreciated.

It doesn't seem to be just D-Link routers.
I'm having a similar problem with an older Belkin model, running DD-WRT firmware, and two different 2010 model MacBook Pros. Heavy upload traffic can cause the wireless access point to lock up.
A friend just told me today that he's having the problem with a Linksys model, running normal firmware, and older model MacBook Pros. Heavy upload traffic (Time Machine backups, in his case) causes his access point to lock up.
(There's a lot of discussion threads about Wireless access problems, but most seem to be of the computer stops talking to wireless network variety. This problem my friend and I are having - which sounds like yours too - definitely seems to be breaking the network for everyone.)

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Message was edited by: blues tank

Sat Oct 18 00:14:04 2008
panic(cpu 0 caller 0x001A9C5C): Kernel trap at 0x00af3e75, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0x3030bd6c, CR3: 0x0186a000, CR4: 0x00000660
EAX: 0x00000001, EBX: 0x042bab40, ECX: 0x0000001e, EDX: 0x40000000
CR2: 0x3030bd6c, EBP: 0x3030be38, ESI: 0x00501fbd, EDI: 0x042bab00
EFL: 0x00010002, EIP: 0x00af3e75, CS: 0x00000008, DS: 0x00020010
Error code: 0x00000000
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x3023bb68 : 0x12b4c9 (0x45aaac 0x3023bb9c 0x1335ba 0x0)
0x3023bbb8 : 0x1a9c5c (0x464070 0xaf3e75 0xe 0x463820)
0x3023bc98 : 0x1a026d (0x3023bcb0 0x0 0x3030be38 0xaf3e75)
0x3023bca8 : 0xaf3e75 (0xe 0x20048 0x30230010 0xaf0010)
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x3023b818 : 0x12b419 (0x45aa50 0x2 0x58db6503 0x1fbd)
0x3023b868 : 0x1a9c5c (0x464070 0x1ae928 0xe 0x463820)
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