I’ve just been working with the folks who update and publish the Compatibility Guide, and I know that this is an oft-asked question.. so here is the news before the news
Very shortly (ie later today, hopefully) we will officially have certified Office 2010 Service Pack 1 with the Enterprise Vault Outlook Addin. There is one caveat to the certification (which covers Enterprise Vault 9, and Enterprise Vault 10) you may experience problems with SearchProtocolHost.exe following the installation of Office 2010 Service Pack 1.
We’ve seen it on some machines, and been able to reproduce it in house, a future “pure” fix will be made available in later Enterprise Vault Service Packs. Strangely we’ve not seen it on EVERY system we’ve come across, even following the same steps, which is why the issue is documented as follows :