I was getting tired of the memory leak associated with the Boost OS 5.0. I was ready to go back to 4.5. Then I installed a hybrid OS from www.nathanix.com last week. If you follow the instructions (it is no harder than installing the Boost OS 5.0) you can delete many of the apps that you don't use (default ringtones (see post about freeing memory), themes, foreign language support, etc). It is very stable and I have had no more memory leak issues. In fact, the OS recovers memory after you close open applications. I very rarely have to perform a soft reboot. I highly recommend it.