I'll be upgrading to 7.2.1 shortly and wonder how long the MYSQL table upgrade script has taken other people to run?

In the release notes the example is for a 4000 mailbox, 250 MB mailbox size, the script could take about 70 minutes to run.

Now I only have 170 mailboxes but most of those are GB's in size, with the average about 4GB

So anybody remember how long theirs took and how many mailboxes + size?