Hi Folks, I'm a Cox customer in south San Diego county, which is SA/Cisco territory. I purchased a Pro and a Mini a couple of weeks ago and have been experiencing an intermittent live-tv tuner failure issue. At times, 50% of the channel changes fail with a black screen. At other times it works well as I select sequential channels with the channel up/down button. I've looked at other threads here containing various tuner problems, and I've seen this black-screen issue mentioned before. Most of the threads seem to reference failures to use all of the tuners available on the cable card, but I'm not sure that's my problem. As a test, I started six simultaneous record sessions, all channels encrypted as reported by the CCI variable being 0x02. I confirmed that the six encrypted channels were actually being recorded by looking at the content, first with the Mini and then with the Pro. All was well. I then stopped the recordings and confirmed once again that all six had appropriate and unique content. I would assume that all six of my tuners are working correctly. But this is interesting: the problem is mostly non-existent when tuning live-tv on the Mini! I've tested this by confirming that the Pro was failing most channel changes, then running upstairs to find that the Mini was working perfectly on the SAME channels the Pro was failing! I repeated this experiment a number of times with similar results. So why would the Mini's tune requests to the Pro work, while the Pro's own requests to itself fail? This doesn't make any sense, but it is what it is, and suggests an issue in the Pro itself. Some threads here suggest that the cable card's firmware needing updating. But wouldn't stale cable card firmware affect both Pro and Mini channel selection? Here are my stats: 90-db signal strength 35-db SNR Manuf ID: 259 Firmware: PKEY1.5.3_F.p.0601 Cox also supplied a Cisco STA1520 Tuning Adapter. For the record, the Mini does fail to tune from time-to-time, I'd guess maybe 1% of channel changes, versus 50% on the Pro (at times). I've also had the "waiting circle" a time or two that required a Mini reboot. Don't get me wrong, the Pro and Mini are great, and I'm happy with the purchase. I'm sure that Tivo will fix this issue soon since it (or a variant) seems to be affecting multiple customers. Indeed, I'm going to purchase a few more Mini's.