Ramon 04 Nov 2004 We use a fairly large solution (over 200 projects). I will spare you with the details why the solution contains that many projects. Loading and building the solution takes a very long time (almost 1 hour). I did some investigation and it shows that during building the "% disk time" is almost 100%. I checked with the FileMonitor (from SysInternals) and it looks like that all assemblies are loaded over and over again. RAM has been upgraded to 1GB to make sure that a lot of data can be cached, but build times are still horrible. When nothing has changed and VS.NET only wants to find out if it needs to rebuild something it also takes a very long time. It also tries to rebuild projects that haven't been changed at all (even dependant projects haven't been changed). This costs us a lot of time (and money of course). This anyone know how to speed up things a bit? Using a makefile would probably have been faster then this.