Don't use Entourage, but there are tons of people out there that are and not experiencing ongoing repeated crashes.
I do run a Win server here, albeit WinHomeServer, and have no issue, nor have I had a single issue with SL browsing the directory structure there, nor on my Xp or Win 7 machines.
Sometimes, it's time for a little troubleshooting, particularly when you're experiencing issues it seems the vast majority are not. It doesn't help just coming around to complain, you or anyone else.
We have a fairly new and fancy Toshiba copier at the office. One day last week it decided not to allow anyone to send any print jobs to it. Then yesterday, it decided not to let us scan and email with an error saying it couldn't connect to the smtp server.
Well, I could have gone and found some Toshiba web site and complained about it not working and why did we change out to this new machine when the 10 yr old one we had was working just fine and I'm never upgrading again. But no, instead we spent a little time (which is not insignificant no matter how little time it is in our office considering our work load), found the individual issues and fixed them.
You might try starting a new thread if you would like to get some help with your issues. We have some pretty good folks here. No guarantees, but hopefully someone could get you pointed in the right direction.