Hey all,

I have hostmonster as a hosting company. When i logged in this morning they notified me that i need to upgrade my current version of Zencart to 1.3.8.1.sp1??

Upgrade an Installation
Please read over the below notes to make sure you know what to expect. Choose the appropriate version and click the "Upgrade Now" button to begin.
Deactivate any special plugins or modules. Some plugins and modules can interfere with the upgrade script, causing the operation to fail.
We may have to regenerate your configuration files from scratch, which may remove some of your customizations. After the upgrade, go through your site and make sure everything works properly.
If things don't turn out the way you like, there is a one-touch restore! However, we will only create a barebones backup of any files that will be affected in case you need to roll back any changes made. This DOES NOT substitute for a full backup, and we highly recommend performing a full backup of your own prior to upgrading below.

What is this? I searched around here and i dont see anyone saying anything about this. They say it may "rebuild" my entire site and things may not work afterwards? What i am wondering about is how long does this take? Should i take my site down while its being done? Is this something that Zencart team of devs is doing?