problem is it wasnt said that VErtex will NOT have those issues... it still can have them..
Very true - if the OS locks on a write attempt, the drive can't handle the amount of write traffic (ie fills cache) due to the MLC being too slow it will stop unless the OS has been written to take notice of the drive's state rather than assume that it will be able to write.
Only problem is the OS has been written that way so that data is committed to disc to reduce corruption.