Its a good idea that you are having us play on the test server to find out where the crashes are coming from. I have a recommendation tho.
Before putting a large patch out and finding these problems on the main server, bring up the test server and let us test it first. I think you will find the community much more patient with helping to find the bugs in a patch before its release than after.
Overall, tho, minus the crashes, I have noticed less lag when crossing zones, and performance in general.
Sorry if this is a duplicate thread. I looked and didn't see another one.