well, I have to say, all issues I have had, NONE of them is to blame 4.2.1, but all to blame is CB :-(
I had issues on a fresh install, WHY : because CB doesn't recognize the masterpath correctly [or not all code tries the path without stripping of the \bin in case it would already be present]!!
And yesterday I couldn't debug at all on windows : WHY : because of CB (rev 4584).
So thanks to the 4.2.1 trial-trip issued of CB got fixed and another one is pinpointed.
The question is : what kind of issues will pop up with 4.2.1 ??
Note that on linux most distributions are already on that version or even newer.
Secondly, if we have to wait till MinGW will finally ever release a new version, I am afraid we will be at CB 3.4 (for sure keeping in mind our rate of releases ;-) ). hey, 3.4.5 was still a technology preview or beta or whatever they call it for years now. I didn't see an new version with fixes or an official release of that version.
In the beginning people also said here on these boards 3.4.5 was bad, well have been using it for a very long time now, haven't had any issues [or I didn't see them].