Hey group, We've got a 4048 and a 4004 Ascend unit and lately they've been locking up every couple weeks. It seems like the ethernet is just going dead... reboot fixes the problem for a few weeks. Anybody ever run into this before? Ideas? These have been running perfectly for atleast a year and then this suddenly starts happening. One is running 7.0.4 and the other 7.0.3 Also, are the fans in this things replaceable? It sounds like we have one going out... TIA, Scot