Remember the freezing iMacs in 2007 and again in 2009? Many were convinced it was an unresolvable hardware issue (graphics card) until Apple came out with a software fix. Some machines exhibited the symptoms whereas others didn't, despite having the exact same graphics card, to the frustration of affected owners who started threads collecting serial numbers to no avail. Same thing with the macbook random shutdown syndrome, which was a hardware issue that was fixed via software. If you have a defective iPhone 4, be reassured Apple will find a solution one way or another. Likewise, if you have a perfectly working iPhone 4 and are unable to reproduce the reception loss, it doesn't mean it's not a real problem for the affected owners. So if history is any indication, there will be a software fix in the near future.