Windows 7: Help required, USB flash drive/Pen drive not working!

I have a 4gb flash drive that as soon as i got it and plugged it in to my XP I formatted it using quick formatt. then put whatever I wanted to on it. It is detected and installed and issued a drive letter in 7 off a 4 port usb extension hub and have never had any problem with it. Do you think it is because existing flash drives that weren't formatted first before adding programs are fat32 and this is causing the problem? I also think mine is a sandisk. I lent it out so I don't know for sure.

On Vista you would run into a problem more then with 7. For avoiding any problems plus the more secure file system I simply reformat any Fat or exFat volume to NTFS for ready recognition. That allows for taking it with you to plug in on an older XP machine as well as on Vista or 7 without need for the preloaded software part.

While 7 now has Fat support returned due to the increased use of external drives and devices with factory Fat volumes you are always better off for another reason now with 7 being able to use the BitLocker encryption as well as the native NTFS.

Chums few days ago I stumbled upon this thread on Tech net :

inconsistent USB support issue Win7 x64 RTM

The thread starter there was also sharing the same problem which I also faced. So it validates my doubt that it's gonna be massive problem for Microsoft b'coz it's not limited to "some user"; despite all their precautions and getting good reviews (thanks to the money they paid for this purpose) they've goofed up with their OS once again. Windows 7 is gonna be another failure of Microsoft. Even after getting so many jolts they r not learning their lessons. Seems only God can save Microsoft!

One thing I found when trying out different brands was one particular brand simply would not work at all on a friend's case while nothing was wrong with the flash drive itself. It simply requires more power then many usb buses even hubs supply!

Fortunately the CyberPower 4port hub bought in a local Walmart supplies enough to see one of the same brand work. Yet the other two brands in use here will simply plug in and work on anything practically suggesting individual drives/devices are the main problem.

Note I still have the 64bit RC on presently while the friend is still runing XP. Is XP the problem there? Not likely! The obvious is hardware.