Brian Klug over at AnandTech has uncovered that Google's Android 4.3 update may fix a widespread performance problem that users have been experiencing with last year's Nexus 7. The issue relates to storage I/O performance; the old Nexus 7 has been known to bog down in speed over time, with the installation and deletion of files and applications (ie. regular use). The 4.3 update apparently can alleviate those problems by enabling support for TRIM filesystem management. Klug discovered that 4.3 runs a maintenance program called fstrim when Nexus devices are idling and have sufficient power, mapping out free storage on the NAND flash so the storage controller can work more efficiently. The next few weeks will tell if this has any real-world performance impact on the Nexus 4, 7, 10, and even Galaxy Nexus devices.