known bugs is why the snapshots are not yet a release version. The first 1.2 beta will be out soon, which will be free of all known issues. The 1.2 release should follow shortly after.
As for IRQ sharing, yeah it shouldn't cause any problems, but it will reduce performance (not sure how much, but something as active as a disk and a NIC, both of which can be interrupt heavy if under load, could be significant).