I have the Greenpacket standard Digicel 4G broadband modem (the white one). I've had it for about a year now and it has been connected to my desktop via Ethernet for awhile. Its in a location where it gets 3 Signals consistently and average of 6Mb/s. However I have a belkin g router connected thru the modem and for some time I have been getting consistently high download speeds and uploads around 6-10Mb/s but about from June I started to get 0.6Mb/s and if I disconnected the router I would get back 6Mb/s.

I thought it was a router issue so I went out and got a Nexxt Solutions Solaris 300 N router and I'm still getting 0.6Mb/s, its like it capped at 0.6Mb/s.
Now im caught up in thinking that since both the modem and the router are wireless they tend to interfere with each other because I've changed everything I could change in the Advanced router settings to no Avail.
Any solutions? Anyone having the same issues.