While the test suite is becoming more complete, obviously more bugs come to light. When the module was first released it was generally usable for many purposes, but it also was subject to bugs that in some cases could difficult to find. I think that PyCLIPS has improved and is by far more stable since then. However the suite is still not complete and thus there can still be even serious bugs that might show up later.
I'm not releasing new source and binary packages for now, because I would prefer the next file release to be more stable than the ones that have been uploaded until now. The CVS tree, on the other hand, is almost regularly updated with all changes and fixes: I think that the CVS version is more robust and tested.
Therefore, I'd suggest to developers that can build the module to check out the CVS version: it compiles almost OOTB with GCC (and on Win32 with the MinGW version, the one I use to build Win32 packages). For the others, version 1.0_06 will still take some days to come out: if you are relying on prebuilt versions, please check the Bugs and RFE pages to see what is going on.