I prefer my desktop PC to my laptop

For years I've only used a desktop PC as main box. Some three years ago I bought a laptop (XP pro pre-installed) because everybody around me had one, and they all seemed very pleased with it, and you could take it everywhere you went, ...

Although it has a decent display (15 inch 4:3 1024x768), the keyboard is rather small (missing the numeric pad). It is meant to be 'mobile' and I used it for this purpose only giving Linux demos and presentations. The added hardware that you have to pull along (external mouse, power adapter) makes it less mobile. Therefore, I don't use it as a mobile PC anymore (I use Ubuntu LiveCd's and Live USB to boot off the guests machine) and now it merely travels from the living room to my study (7 meters apart).

Performance wise it works fine, and after three years the battery still gives me nearly 2 hours of power, depending on the type of use of course. As I have to drag the power adapter wherever I use it, it caused the low voltage cable between the adapter and my laptop to disconnect from the adapter itself (again), which caused me to order my third power adapter in three years. Not very cost efficient.
Hardware wise you are stuck with whatever hardware is fitted in the laptop. It has a Broadcom 4312 Wifi and in the beginning it took quite a bit a googling to get the wifi running under Linux. Now, with the drivers in the kernel, that problem is solved.
It has an onboard shared memory ATI video card and we all know the problems with drivers for ATI cards, but I cannot change to an nVidia card.
On my desktop all those problems are not existing. I can put my own box together, selecting the correct hardware for a Linux environment, add extra discs, installing a better videocard if I want to, and it is generally cheaper than a laptop with the same spec without the added cost for a MS-Windows license but it lacks the mobility, which is a non-issue anymore now.
That being said, my HP Compaq nx6325 will remain my first and only laptop for as long as it works fine, but I will not replace it with another one, should it break down.