DGL-4300 Wireless Connection Issues

[TopcatF14B]

I have a DGL-4300 that has served me well for around 5 years but we recently moved into a bigger house and bought some more wireless equipment and the router seems to be having issues with maintaining a wireless signal with all of the hardware simultaneously...

We have 2 laptops, 2 desktops, a roku box, a blu ray player, a wii, 2 Xperia X10's and a netbook... all wireless (G)

My xbox 360 is connected through a cat 5e cable.

Is there a limit to how many wireless items can be attached at one time? Is my router dying and in need of replacement?

I am using firmware 1.9 and have put most of these items on the DHCP reservation list.

Wireless setting are: WPA2 with super g without turbo.

Everything CAN connect but not all at the same time...

 

[Kil4Thril]

It could be the router itself. I've had intermittent issues with mine when using multiple wireless devices concurrently. Everyone tells me to get the newer Netgear, but I can't bring myself to replace the Dlink due to lack of funds.