I installed servers yesterday and had no issues.
I would recommend at the minimum making sure whatever versions you have are either not vulnerable or patched.
If you're running 10.0.1.1000 the migration path is upgrade to 10.1.0.394 and then patch to .396.
If 10.0.2.2000 you can apply a point patch to fix the vulnerability.
I learned one thing from this past week. When symantec releases a MR or MP, install it. They seem to build releases and patches that require the latest releases be installed. If the latest is not there, you need to go back and install them in order until you get to current.