as you have not mentioned a file system you are using, if you use sfs - back off imediately.
at least try to reformat the drive in question with another filesystem, be it ffs for the time being (ive switched now to psf3). if this gives you no further errors, the problem 'sbeen found. if not, somethin else is the couse. i dunno about prometheus. mediator here. no read/write errors whatsoever, thank god(s).
