In 4.2.2 I can say --monitor=2 and xftaskbar will open up on the 2nd monitor, but in the 4.3 svn that option is gone and it always opens on the monitor with pixel 0,0. I like keeping the panel open on my main monitor iwth the taskbar plugin in that, and then having the seperate xftaskbar on the other monitor. Reproducible: Always Steps to Reproduce:
Should be fixed now. Note that the separation of taskbar, iconbox and panel is supposed to disappear, so things will most likely be quite different then.
Ehm, I meant to change the status to RESOLVED previously.