I have a WRT600N router and it is working great except that it keeps slowing down on download.
I have been trying to get some help from Linksys for the past two weeks but all they can tell me is they have never heard of this.
I have 8MB download after I cycle power. After a week it is less than 1MB, after one day it loses about a meg. Every time I cycle power it goes back to 8MB.
The router is out of warrenty so I am willing to buy a new one but the reviews on the 610 are so bad and after not being able to get any help from Linksys I am thinking of getting a different brand.