i doubt it is the USB ports. I have troubleshot an item ee'ons ago and it was once, i heard from a fat cousin, the usb port...let me know if that works.
i am having the same problem. im on windows xp 32 bit home, fw 410.21.010 e71-2. anyway, after many reinstalls, i have solved the problem a little in the sense that after uninstalling everything, and using the pcsuite cleaner and uninstalling ovi music and
everything to do with ovi and pcsuite and cable drivers from my xp uninstall function and then going to the regedit and deleting from the CURRENT USER and LOCAL MACHINE, anything to do with nokia and pc connectivitiy cables, and then using ccleaner to clean
everything and then a reboot and reinstall of the latest pc suite, DO NOT INSTALL THE 'UPDATE PHONE SOFTWARE' manager. i dont know how the phone is going to check for new FW, but for now, i can use pcsuite and will worry about updating the fw if and when nokia
releases anything new, in the future. i took this opportunity to make better sense of my contacts and calendar and have set the sync function so i can sync with ovi - my contacts, calendar, notes.
pc has been very unreliable for me and my two e71's and e65.