v. 4.21 misery

[eshrink]

vBulletin 4.21 (going from 4.20x) notes that this is not an update but an installation.

I attempted to upload the files, and it one by one by one by... began to change the permission levels of each file on the server.

After two hours, it was still changing these permissions as a slow rate.

Since my site is critical to what I do, I aborted and all is fine (although the permissions for the files touched are likely still wide open).

Would it be better to have my server owner mass-change permissions, and if so, to what value?

Thank you, first time in all these years that I have run into this.