Hi,
Sorry about that. We have heard a few similar reports from other users, and asked to provide some details, but have not heard back from anyone yet. We will be more than happy to fix this, as long as anyone could provide the diagnostic information needed to narrow it down.
Next time Visual Studio freezes, could you please try attaching a debugger to it as shown here, and capturing the call stack along with the exact build number from Help->About VisualGDB? It would also help if you could share more context (e.g. you started VS, opened a project, switched to something else for 10 minutes, and then VS froze).