I seem to be having the same problem. When I last experienced this I was runnging jrec 2.5, jetty 4.2.11, trio 0.1.4.alpha4. I was using ARM with DHCP disabled, getting DHCP from my linksys BEFSR41 router. I had a dhcp range of 192.168.1.129 through 192.168.1.200. All other devices on my network are fixed ip. I've since turned off DHCP in the router and re-activated in ARM. I'm trying to see if this will correct the problem. My hard deive is about a year old so its pretty fast. Can't remember the exact specs.