According to Mobile Today many Nokia N97 owners have returned their handset due to software glitches, particularly a problem with the backlight not turning on. Retail staff from Carphone Warehouse, 3 and Vodafone claimed that they have been experiencing a high level of returns due to the software problems on the device. Nokia released the new firmware earlier this month which included over 100 improvements including many bug fixes. Nevertheless, this firmware update is still faulty and not as stable as it should be.
Source: Daily Mobile