Ofir, I'm sure your question is directed to the original post, but in my case I am using regular Download. I don't burn until the project is finalized. In my case, a complex program might be downloaded to the PLC dozens (or perhaps hundreds) of times before I'm done (this is one reason why I've been begging for online editing capability). The image corruption is rare, but it has happened to me several times over the last few years. It seems to me that the problem is worse with the V1210 than the V570, but I don't have hard data to support that.
I am currently using Visilogic 9.4.0 on a Win 7-64 bit machine.
By the way, I don't consider this a serious problem. As far as I can tell, it affects program development only. Once the PLC is in the field it doesn't occur.