Why does my HTC desire mount the SD card in read only mode? I have a new HTC desire. After 3 days of use it started mounting the SD card in read only mode. I couldn't mount it in read-write mode until I formated the card in another phone.

I read somewhere on the HTC forums that this may be caused by plugging the phone in a Mac. But this doesn't make any sense to me. I did plug the phone in a Mac the first time, but this didn't start happening after that. It started happening after I've plugged the phone in a Windows 7 pc. I've never used the phone plugged in a computer in sync mode, it was either used as a mass storage device or in charge only mode (which was the case before this problem ocured). Of all the portable devices I've used that could be used as a mass storage there's never been a problem if I've used them with OS X, Linux or Windows. So I don't find the OS X explanation satisfactory. From what I know all operating systems will handle mass storage devices in the same way more or less especially if it's a FAT filesystem.

Has anyone else experienced this problem?
I had the same problem with stock 2.1 ROM. 

After the OTA update to 2.2, the problem vanished.