So somehow I missed a tweet from Rob D’Oria, but apparently there’s an External BLOB Storage (EBS) hotfix that is necessary for SharePoint 2010 environments using EBS that was released back on September 7, 2010 with KB number 2398734. The hotfix was primarily built to address the following EBS issues:
A customized external binary large object (BLOB) storage provider (EBS Provider) crashes the worker process (W3wp.exe) when you perform one of the following actions:
– You upload a file through the Windows Explorer view or through the Microsoft FrontPage remote procedure call (RPC).
– You upload files by using the Multi-File upload control.
– You create a publishing site.
The hotfix also addresses a scheduled password change process issue:
The scheduled password-change process fails when you try to use the automatic password change feature for a SharePoint farm service account. This issue occurs when the service account is not a member of the local Administrators group in Windows.
After installing the hotfix, be sure to run the SharePoint Configuration Wizard to ensure that it is absorbed into the rich ether of your SharePoint fiber. 
And on a side note, this hotfix does not seem to be a part of the October 2010 Cumulative Updates for either SharePoint Foundation Server or SharePoint Server.
Thanks again to Rob for the tip!
The Tech Blog of Dan Usher 
2 replies on “EBS Hotfix for SharePoint 2010”
Hello
My name is Héctor Calvarro Martín and I’m Microsoft Sharepoint Support Engineer for Western Europe.
I can confirm you that the hotfix is not included in the last CU and ,in theory, it’s intended to be installed in environments that had the issue described on the symptons section in the KB article.
On the other hand, It’s scheduled to be released in the SP1.
Thanks.
Kind Regards.
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