Two schools of thought here, both valid. "If it ain't broken, don't fix it" and "there's always room for improvement". Hardware manufacturers don't issue firmware upgrades for no reason and it's usually one of two reasons. Either they've discovered a (sometimes obscure) flaw in the previous version or they've discovered a better way to do it. Plextor's claims of "Improved performance of reading audio discs, improved initialization of CD-Extra discs, improved performance of CD-Text discs and improved performance of reading overburned discs" makes it tempting to upgrade as long as there's no downside, like removal of some feature that CloneCD depends on to work properly. You're right, I'm not going to update my firmware until I find out for sure - and maybe not even then!