Have a look at the blog post from Jef.
XeniT can install, tune and troubleshoot your Alfresco instance, including nursing your lucene indexes. We can offer an in-house SLA on your local Alfresco, or a cloud hosted solution.
Our Alfresco projects manage e-mail, documents, web content and digital assets. We build ISO systems, documentation systems, large archives & bespoke applications for your industry (utilities, construction, ...).
Alfresco often runs in conjunction with back-end systems like SAP. We integrate and make your meta-data a valuable asset. When required, we integrate your business processes with Alfresco's activiti BPM software.