&gt;  there really shouldn&#x27;t be any need to run 32bit builds on a 64bit system<p>Maybe the 64-bit version doesn&#x27;t support the Adobe Flash plugin?<p>The another problem with 64-bit versions is that all the pointers are twice as big. So if you have only 8 GB of physical ram, you won&#x27;t necessarily be able to handle much more than with a 32-bit application. But with 16 GB or more the 64-bit version must be better.