Looks like there is a patch out for the nasty snapshot bug introduced in 5.5 Update 3. VMware’s site seems to be having issues, apparently there is quite a bit of demand for the patch.
There is a patch for anyone already on Update 3 and the Update 3 bundle has been pulled and replaced with Update 3a which includes this patch.
More details can be found here, since VMware’s site is currently borked.
There is a time and a place to run the newest version of something, but rarely is that place on mission critical production hardware. I am very glad I held off on Update 3, though not upgrading posed its own issues (mostly in the form of known security issues in 5.5 pre-update 3). Being forced to choose between a known buggy crash-y mess or a known insecure platform was not much fun.