Ok, my Cellular Line (very good brand) car charger do not work with N900.

Worked fine with N97.

After reading this thread i've opened the microusb connector and... surpise! There is a resistor between the ground and one of data pin (i suppose D+).



So... where is the standard?

Dumb USB chargers must have a resistor between D+ and D- or only D+ must be put to the ground?

This charger works with ALL microusb devices EXCEPT N900...
I think that this is an implementation BUG of N900 that must be solved to permit users to use 43,874 usb chargers on the market...