Ok, I have an iPhone 3GS 32GB on 3.1.2 jailbroken using blackra1n. I have had no problems for the last 3 months. I did have about 15 GB of disk space left but suddenly the other day I noticed that when I was looking at SBSettings that number was reducing automatically by 8 mb about every 10-20 seconds or so. I then held in the power button and the home button and the regular number came back. But then the same thing started happening again. As of now I have 0mb on /var and forcing it to shut down is not helping. I did some digging in iFile and found that it says that my /var/mobile/library folder is about 16 GB large but I checked the individual contents of the folder and they definitely don't add up to 16 GB. I don't know what the problem is. If anyone has an idea about what I can do without restoring that would be great.