Linksys rules.....but that aside, fuck those things. That is a lot of money to simply avoid finding the cause. The first step is to disable the security and see if it still happens. I'm betting it will, and the problem is that you need to chance the frequency your wireless is operating on. If it's on 6, swap to 11, and if it's on 11, swap to 6. If the security is the problem, disable it and use mac filtering.