I never use Internet Explorer on my Windows Servers. Is there any reason I should upgrade Internet Explorer (version 6 or 7 to 7 or 8)?
The main benefit I see would be security.
That alone is worth upgrading and the other reasons mentioned: other apps may use it, other individuals may use it, and for testing are defiantly worth considering.
However, the best bet might be to wait a couple weeks so the initial bugs get ironed out then do the upgrade.
There always seems to be one big security flaw in new IE releases.
Like many things in this world, it depends:
If you have web based applications in your shop that you might have to access from one of these servers (*) and that app doesn't work with IE7 or IE8, then no. Otherwise, I don't see anything wrong with updating the version of IE as part of your regular upgrade cycle , but I wouldn't bother rushing it.
(*) In general, you shouldn't have to use a browser on a server to access any web application. That's what workstations are for; and again, if you or your users depend on IE6, then no, don't upgrade it. Setup a test box in IE7/IE8 and audit your web applications.
Oddly, not upgrading IE protected me from the nimda virus.
I used to run a SCM server that used NT 4.0, which comes with IE 2, and I had never upgraded. Despite the fact I had the server configured to only allow connections from internal IP address, nimda had infected our exchange server so it still managed to get on to my server using the ..\.. alt encoding trick. However, nimda failed to infect my server because it used a fnc in WININET that wasn't in the IE 2.0 WININET. My IIS logs were full of these failed attempts. It took quite some time to figure out why my server didn't actually have a nimda infection.
Had I upgraded to IE3, my server would have been infected as well. (I'd prefer not to have IE installed at all).
I upgrade IE selectively. If the server runs or is managed by a web app I absolutely will not upgrade until I am certain the app supports it. Otherwise if the thing should never be used or launched I will upgrade right away. I have had web admin tools broken by IE upgrades and had to downgrade before I could resolve issues.