It's really not all that bad...I much rather deal with Cisco software any day rather than Microsoft
Anyway I'm running 12.2.50 on some of our 3560's worldwide, but most of them are running older code such as 12.2(25) and have been 100% stable:
ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)
****-3560-1 uptime is 51 weeks, 1 day, 9 hours, 0 minutes
System returned to ROM by power-on
System image file is "flash:c3560-ipbase-mz.122-35.SE5/c3560-ipbase-mz.122-35.SE5.bin"
Good luck!