Am running 4.x on 6 computers (all xp pro)and it has been very stable. As I undertand it, 4.x must be installed over 3.7.15 and be installed with SQL in the main computer. The converted database is no longer *.mdb but *.xml.
The program is faster and more reliable. However some actions use too much of the CPU resources (up to 100% usage) and will slow it down (or slow down another app). For example, saving an office encounter ('Sign It') uses a measly 14% but saving a message ('Save to Chart') uses a whopping 100%.
