I have a WRT55AG v. 2 connected with a cable modem (Dynamic IP Adress). The problem is that after some minutes navigating in the internet the connection just get blocked, the internet light stops blinking and stays on, after that the only way to recover the internet connection is to turn off both the modem and the router, but then the same thing happens. Without the router everything works fine. I have contacted Linksys tech support for hours, changed firmware, do a hard reset and even sent the router to Linksys for RMA, received the "new" router and unbelievable, same problem! Contacted Linksys again and same solutions, firmware update, etc. I don't know what else to do to solve this problem so any help will be highly appreciated.