Like Joelles has mentioned, basically the procedure here is to move out the "Applications" directory from the root 300MB partitionto the larger 7GB+ partition, then creating a "ghost link" or symlink in its original location, which will serve as traffic redirection. The messages shouldn't appear anymore after this. Or, if you wanna do it manually without using BossTool, assuming you're on Windows, download the app PuTTY HERE, then run it and do the following :

1. Identify your iPhone's IP address by going into your iPhone's Settings > Wi-Fi > BLUE ROUND ARROW next to CONNECTED Wireless Network

2. Type that into PuTTY, Port 22, press ENTER.

3. Login as "root", default password "dottie" (1.0.2 firmware) / "alpine" (1.1.1 > 1.1.4)
*** Password asterisks will not appear as you type, this is normal.

4. After logged in, type in the following lines one by one, be sure to follow them exactly, press ENTER after every line.

# mkdir /private/var/Applications
# cp -Rp /Applications/* /private/var/Applications
# mv /Applications /Applications.backup
# ln -s /private/var/Applications/ /Applications
# rm -rf /Applications.backup

5. Reboot the phone. Done!


Good luck!