I would a agree with that advice. I think it is a real shame that Linpus is not well maintained, as it is an often people's first experience of Linux. What is good is that in the main it just works. However if you want to change the software or even upgrade it is not straight forward. Most distribution use a package manager that lets you install software really easily, but I could not work out what I was supposed to do and having been a ubuntu user for a long time didn't really bother.
I have Linpus on my netbook and have installed Ubuntu as well, but hardly ever use Linpus. I suggest installing another distribution along side it. It may seem a bit daunting, but if you are going to stick with Linux you will be glad you did it. You will probably need to create a bootable USB drive to do the install. I am sure you will find lots of advice on this site for people's favourite distribution.
I suggest leaving the linpus install on the netbook (usually an option on the install - it was for ubuntu), as it does not take up that much room and if you have problems with the other distribution you always have that to fall back on.