No problems with my phone since day 1 purchase. This afternoon, phone looks like it's running, apps window opens but Browser, Market and other apps simply won't open up. If powered off, started up again, same problem. If I hold menu it shows the apps that I started as running but nothing can be accessed. Settings can be accessed but I can't get down to lower levels such as wi-fi settings. I tried stopping services but nothing seems to return the software to working order Is this a software or hardware issue ? Any suggestions. I'd like to avoid a full reset if possible unless that's a final resort.