1 | There are concerns about the reliability of the Java Virtual Machine (JVM) for long running applications and computations. |
2 | There is an even greater concern about JVM usage in heterogeneous computing environments, where there is great variance in JVM quality and consistency of implementation. |
3 | Vendors (not just Microsoft) have taken it upon themselves to build their own JVM's which may not be fully-compatible with Sun's implementation of the JVM as found only on Solaris and Win32. |