Hmmmm... Seems that I have made just the inverse observation: v2.5.1.0 crashes much less than 2.4.0.0 and can run stable over a long time...
But I can assure you that as more users have experienced similar problems, our devs are working on the issue. In order to try out if your specific problem has already been fixed, you can try using a debug build, which can be downloaded using a link on the bottom of the download page. (Don't worry about the startup warning
)