I've installed eBoostr on 7 different machines now and I've not experienced and stability problems on any of the machines. The speed test reports a performance ratio of 19 or better across all seven PCs. The PCs range in age from a year old to about 8 years old containing system RAM ranging from 384 MB to 2 GB. All PCs have Windows XP Pro installed on them and eBoostr is using system memory ranging from 32 MB on the oldest machine with limited memory to 512 MB on the newest machine having 2 GB of memory. eBoostr is working fine on all the machines providing greatly reduced launch times on the most frequently used programs. I've not experienced reduced performance, computer freeze-ups, or any of the other problems attributed to eBoostr that a few others are reporting. Perhaps these folks have other cache utilities or system optimizers running that are fighting for system resources. Or, perhaps there is malware on their system which they are not aware of that is causing problems.....