i have ran into these issues before, sometimes the driver extension can get messed up, sometimes it can be the eject system getting gummed up, or a bad cable connection.

i think it was more of a issue with the drive or the driver pref file or something other in the OS and not the OS itself.

the only floppy drive i had issues with was the one in my P475 not ejecting due to being gummed up inside due to not being used, working it a little bit and cleaning it out solved that issue.