The problem I am going to discuss is not related to the ubuntu or any other OS, Its just a wireless network related issue I want to resolve. I hope some one will definitely help me.

In our office network we have LAN network with proxy server and all computers are under a domain controller. Maximum computers are on wired connection. We have two wireless routers of Linksys 2.4 Ghz in office both are placed at different corners of office.
The problem is that now a days the wireless network stuck most of time in a day and every time I must restart the router. The problem persists randomly in any of both routers. So please if any one know the reason for this problem and its solution than please give me reply...