This post is long overdue but I've been busy :-)
We have been using Microsoft's CAB framework now since January and I could not be happier with how it is going. We are definitely still learning, but we have converted a large part of our existing .Net application over to use the CAB methodology.
When I first looked at the Enterprise Library V1 I wasn't all that impressed. I found there was a whole lot of fluff for not a lot of function. The UIP block was too web oriented, the Data Access block didn't give you much if you were not trying to be DB independant and I just didn't grok the Exception handling block.
When I first looked at CAB I was hooked almost right away. It is an excellent fit for what we are doing at Tavis. Anyway, I'll try and post more about how we are using CAB rather than just gushing...
Oh yes, one more thing. I was so happy when they changed the name of their Smart Client Baseline Architecture Toolkit to Smart Client Software Factory. Woohoo! I guess they don't aswer to the same marketing people who renamed Microsoft Shell to Powershell... gag.