Beavis is right... be sure to install Hoster again. I'd suggest you first REMOVE and then REINSTALL to insure all that can be removed has been and is replaced. We do not remove any KMA files, Songs Database, or your persistent preference settings. These will not affect performance however.
There are several others who have reported crashing when adding a track from a Singer's disc to the Playlist, but so far this has not surfaced as a true Hoster bug. It appears this started with 3.006.
We are expecting to release Hoster 3.104 early next week. One user in FL who has experienced a lot of crashes with Singer's disc tracks is currently testing 3.104 on his system to see if it still does this. So far, we are suspecting his Plextor drive may be malfunctioning.
As to crashes at 2 hours, this has never been reported before. It sounds like something on your computer has changed. 
You clearly have the compute power and RAM so that's not the issue.
Test the system with Hoster running for a long time at home. Open your Task Manager (press Ctrl-Alt-Del) and click the Performance Tab to watch the CPU utilization. Also, check the free RAM. If you see anything increasing these resources, then you have some other program running in background with a memory leak, or other consuming problem.
How long (month-wise) have you been using Hoster before you noticed the crashing at 2 hours? What I'm probing for is whether Hoster was stable for weeks/months, then started exhibiting this behavior. I believe that will be the case if you seriously think about it. Then, think what might have been done to the computer around that time. Please let us know what you come up with.
MTUSUPPORT may have some ideas next Monday. I'll notify him to be sure and read this thread.
