I have been using Borland's C++ since it came out and I have only experianced these kind of problems on my old 286 PC( six years old ), and very rarely indeed. My 386DX has never had any problems like this. In fact since I received 3.1 I have not had my machine hang once( except for user generated stupidity ).
I also own Zortech and I have never been happy with their environment or support. I have never received any notice from them of new product's or updates. Never in 2 years.