Winamp version: 5.65
ML_iPod version: 3.10
iPod Type: 6G Classic 120GB
The rating sync feature appears to be broken/buggy. I'm using a fresh install of WinAmp, with no other addons. I only started using winamp a few weeks ago to organize my songs, and only recently discovered winamp would sync with my iPod. pmp_ipod will not sync ratings, so I installed ml_ipod just for that feature. Most of the song ratings i've been entering for weeks were instantly cleared when I used the "Sync Ratings" button to push the winamp ratings to my ipod. I have my ratings from before I started using winamp saved, so at least it's not a total loss.
After further testing, I've noticed that there are 10-20 songs on my PC that have their ratings cleared every time I use the "Sync Ratings->Smart Sync" option. The songs on the iPod are unchanged.