It turns out that stability isn't the only problem Vista SP1 has with the world. There are plenty of products that simply won't work with Service Pack 1. Now wait a minute, you might ask. This has been going on since every operating system update from the beginning of computers, what makes this one so special? When the products are from big shots like Trend Micro, Zonelabs, BitDefender, and Novell, Microsoft is more than willing to consider delaying Vista SP1 to make sure that everything will work properly. While some products are fortunate, and merely have a couple glitches, the majority of the programs listed on Microsoft's great list of incompatibility won't even start properly. The main cause of this could be anything from coding differences in the kernel to being flat out blocked. Hopefully, Microsoft will fix this by the time SP1 is released.