This really does not fit the description of cloaking, the content is the same, just different languages right?

If this is the case IMO this would not bee seen as cloaking as your are not delivering different content, just user experience.

Also as long as you are not separating IP delivery by source (meaning sending spiders somewhere different than humans) this would not be the definition of cloaking.

WIKI:

One use of IP delivery is to determine the requestor's location, and deliver content specifically written for that country. This isn't necessarily cloaking. For instance, Google uses IP delivery for AdWords and AdSense advertising programs to target users in different geographic locations.

As of 2006, many sites have taken up IP delivery to personalise content for their regular customers. Many of the top 1000 sites, including sites like Amazon (amazon.com), actively use IP delivery. None of these have been banned from search engines **as their intent is not deceptive.  **    Keyword here..... Deceptive 

Hi,

Our IS department is bringing down our network for maintenance this weekend for 24 hours. I am worried about search engine implications.

all Traffic is being diverted, and the diverted traffic is being sent to another server with IIS 6.0

From all research i have done it appears creating a custom 503 error message in IIS 6 is not possible  Source: http://technet.microsoft.com/en-us/library/bb877968.aspx

So my question is does anyone have any suggestions on how to do a proper 503 temporarily unavailable in IIS 6.0 with a custom error message?

Thanks