It is rare however ext-todo patched or even unpatched qmail might start using too much CPU. This is because qmail-todo going into a loop and checking queue/todo directory way too many times.  You can find the simple fix to this problem in this article.

There are a few functions in PHP which allows access to things that the users do not need to know or use. Disabling these can increase security.

A lot of hosting companies are in need for automating their business. Billing, domain registrations, account applications etc. these all must be automated so the hosters can decrease their costs and give more competitive prices to their customers. But what are the solutions that hosters can use? HSPcomplete and H-Sphere are two examples of these products. In this article, I will mainly discuss about advantages of using H-Sphere as HSPcomplete is an unreasonably expensive product.