I'm not sure if anyone else has come across this issue, on my primary machine Code::Blocks is working perfectly.. after working with it I decided I was done with Dev-C++.
The only problem I have seen so far is, I installed Code::Blocks on my laptop (Dell Inspiron e7500, Windows XP Home), on top of a wxDev-C++ install. I know when you try to install the original MinGW from their site on top of a Dev-C++ install you will have issues. The only symptom Ive seen is when I do compile a program on my laptop, the MessageBox function does nothing.. however compiled on my primary computer the same exact code works like a champ.
I uninstalled every compiler I had on the laptop, reinstalled Code::Blocks and retried the same code and had the same result.
If it helps, my primary machine is a Compaq Presario, AMD Sempron Processor 3200+, 512 megs of ram.