ive searched everywhere and cannot find why my sd card has almost no room left, its at 2.3g out of 7.5. i dont have many pictures, movies, or apps. what is taking up so much room? i read somewhere else backups could be the culprit but i have looked and have no folders named nandroid or clockwork?
When this happens to me, I either:
-plug my phone into a computer
-search the SD card using something like Astro, ES File Explorer, etc.
With either method, search every folder of your phone's SD card. Don't be afraid to right click, when in Windows, and select properties to see how big the file is.
When scanning these files, you may come upon files and names that seem familiar to you, including files and folders that you thought were permanently deleted from your phone. Often times, apps that you once had will leave bits of information stored on your SD card even though they've been deleted. If they are unimportant to you, delete them. You will see a big change after doing this. When my 16GB gets too full, I do this and I will usually end up clearing GBs of data.
Luckily you are rooted and can use root privileges to scan even further into your SD card. Most file browsers allow viewing of areas only available to root users, but I use Root Explorer which allows you to look into the internal memory and more places of the SD card.
I prefer to do the above in my computer as it's much faster and is much more bigger and in a more familiar area and allows more customization than most file browsers allow.