@brianl, i have been a Tablo user for several months and I can’t say i completely disagree with you. I had loading please wait issues (via Roku) to the point that TV was unwatchable. There was a new revision a few months ago. Very few loading please wait issues, but the picture would freeze on occasion.
After support from this forum and Tablo it was suggested using Tablo on a 5Ghz channel could solve the issue, as 2.4Ghz channels can be crowded. I changed providers (from Uverse to TWC), did my research, bought a good modem, good router and a Roku 2 (duel band) so Tablo and Roku would be running on a 5Ghz channel.
There is no question there was an improvement, but with both recorded and live TV the picture freezes and causes my Roku box to reboot. This happens almost every TV watching session (I plan to put in a ticket to give support all the specifics).
I love the Tablo concept, the whole house solution and a very low monthly payment, but Tablo should have a higher reliability factor for all and a few more features (the help shape the tablo road-map thread has hundreds of suggestions) that people have come to expect.
Bottom line: I do think Tablo was released a bit too soon.