Increase your application space...(if you are brave)
Right well this is not for the faint of heart....
Requirements: Knowledge of UNIX/OSX (intermediate or advances), SSH, jailbroken, BSD subsystem
Warning: You will possibly need to restore if this does not work as anticipated. I haven't even tested it.... So dont blame me.
OK so here goes:
Modify your fstab so that the media partition will be mounted with execute
Right currently it should look like this:
/dev/disk0s1 / hfs rw 0 1
/dev/disk0s2 /private/var hfs rw,noexec 0 2
Now delete the noexec option.... and save it.
next cd to the root of your iPhone:
then we need to copy the Applications directory and all of its subdirs to the media partition:
cp -r /Applications /private/var
now, just for now we need to rename the original /Applications dir:
mv /Applications /Applications.bak
now we need to create a symlink from the "new" Applications directory to the root of your iPhone:
ln -s /Applications /private/var/Applications
Right.... now reboot your phone and pray.... if it works you can now delete the /Applications.bak directory:
rm -rf /Applications.bak
Now even though the application installer will report the same amount of space free, stuff that gets installed into "Applications" will actually be stored in your Media partition.
As I have stated there is a good chance you can really stuff things up by doing this. I'm not going to, but people might find the concept useful.