Hi fraggle89,
Post back with information on all computers and their operating systems.
I have a wired computer with Windows 7 Ultimate 64-bit with Windows Live Messenger 2011 and a Wireless Computer with Windows XP Home Edition with Service Pack 3 installed.
Do all of your computers, use the same version of WLM?
I have:
a wireless laptop with Windows 7 Ultimate 64-bit with Windows Live Messenger 2011.
a wireless laptop with Windows 7 Home Premium 32-bit with Windows Live Messenger 2011.
a wired computer with Windows XP Home Edition with Service Pack 3 and Windows Live Messenger 2010.
When I try to login on WLM 2011 on the Windows 7 laptops, the complete internet connection falls out on all computers (both wired as wireless). For example: I try to login on WLM 2011 at my windows 7 ultimate laptop, and the internet connection on that laptop, the other laptop and on the Windows XP computer falls out. But when I login on WLM 2010 at my Windows XP computer, I can succesfully login without the internet connection falling out.
In the time I was using WLM 2010 on my Windows 7 ultimate laptop I didn't have these problems. I could also succesfully login without the internet connection falling out.
Try setting up static IP addressing for each computer connected to the router?
What wireless modes are you using? Does it happen with single mode G or N?
Does the wireless stall if you set no security for a test?
Does it happen if you disable the routers firewall?
At the moment I am using mixed mode 802.11 n/g/b.
I didn't try to test it yet with no security. I will try it soon.
I tried to disable the firewall by unchecking 'enable SPI'. After rebooting the router I again tried to login on WLM 2011. And again the internet connection falls out.