I ordered the "Time Trax Complete" system on 16 October. I got the possible 4 weeks to ship, but received it in 2 weeks. It is great. Another way that people are reporting being able to get their unit faster is to purchase an XM Direct Radio
(this is apparently the hold-up) locally and then order the "Time Trax Connect" It works out to cost the same amount. If you go to Time Trax Support
there is a link on the bottom left hand side to take you to their support forum.
Another way to have a somewhat TiVo unit (not recorded to computer) is to wait for the MiFi
it is a portable unit that can be used in car, home or as a portable unit. It is capable of recording the 5 latest hours of XM or you can set up two specific record times.