Apple has released an update to Mac OS 9. Version 9.2.1 is available now. Modem users beware, it weighs in at over 80MB!

"Mac OS 9.2.1 Update improves Classic application compatibility in Mac OS X and additional hardware support for Macs capable of running Mac OS X," said Apple.

The 9.2.1 update requires users to have Mac OS 9.1 installed if they are performing an automatic or manual update. The new operating system can be installed on Mac OS X-compatible computers, including the Power Mac G3, Power Mac G4, PowerBook G3 (except for the original PowerBook G3), PowerBook G4, iMac and iBook.

Separate versions of the 9.2.1 installer have been created for International English and North American English markets. French, German, Spanish, Italian, Dutch, and Japanese language versions are also supported. The update is available either as a single 83.1MB installer or as a six-part download.

Apple has not yet commented whether the Mac OS 9.2.1 update will be available as a CD - usual UK cost £15.