[Defy Android Development] TJKV:
Edit: Silly me, I had accidentally restored an older version of aerocontrol and was using that, I will try with the latest later and check again.

[MENTION=4855459]Blechd0se[/MENTION]

Trimming works on Slimkat, but with this error in logcat:

D/su ( 3619): starting daemon client 10050 10050
D/su ( 3621): connecting client 3618
D/su ( 3623): remote pid: 3618
D/su ( 3624): remote atty: 0
D/su ( 3625): remote uid: 10050
D/su ( 3626): remote req pid: 3019
D/su ( 3627): remote args: 1
D/su ( 3631): waiting for child exit
D/su ( 3632): skipping daemon client 0 0
D/su ( 3633): su invoked.
D/su ( 3634): db allowed
D/su ( 3636): 10050 /system/xbin/su executing 0 /system/bin/sh using binary /system/bin/sh : sh
D/su ( 3639): client exited 0
D/su ( 3638): child exited
D/su ( 3642): starting daemon client 10050 10050
D/su ( 3645): connecting client 3641
D/su ( 3646): remote pid: 3641
D/su ( 3647): remote atty: 0
D/su ( 3648): remote uid: 10050
D/su ( 3649): remote req pid: 3019
D/su ( 3650): remote args: 1
D/su ( 3652): waiting for child exit
D/su ( 3655): skipping daemon client 0 0
D/su ( 3656): su invoked.
D/su ( 3657): db allowed
D/su ( 3659): 10050 /system/xbin/su executing 0 /system/bin/sh using binary /system/bin/sh : sh
D/AndroidRuntime( 3635):
D/AndroidRuntime( 3635): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
D/AndroidRuntime( 3635): CheckJNI is OFF
D/dalvikvm( 3635): Trying to load lib libjavacore.so 0x0
D/dalvikvm( 3635): Added shared lib libjavacore.so 0x0
D/dalvikvm( 3635): Trying to load lib libnativehelper.so 0x0
D/dalvikvm( 3635): Added shared lib libnativehelper.so 0x0
D/dalvikvm( 3635): No JNI_OnLoad found in libnativehelper.so 0x0, skipping init
D/dalvikvm( 3635): Note: class Landroid/app/ActivityManagerNative; has 179 unimplemented (abstract) methods
D/AndroidRuntime( 3658):
D/AndroidRuntime( 3658): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
D/AndroidRuntime( 3658): CheckJNI is OFF
D/dalvikvm( 3658): Trying to load lib libjavacore.so 0x0
D/dalvikvm( 3658): Added shared lib libjavacore.so 0x0
D/dalvikvm( 3658): Trying to load lib libnativehelper.so 0x0
D/dalvikvm( 3658): Added shared lib libnativehelper.so 0x0
D/dalvikvm( 3658): No JNI_OnLoad found in libnativehelper.so 0x0, skipping init
D/dalvikvm( 3658): Note: class Landroid/app/ActivityManagerNative; has 179 unimplemented (abstract) methods
E/memtrack( 3635): Couldn't load memtrack module (No such file or directory)
E/android.os.Debug( 3635): failed to load memtrack module: -2
D/AndroidRuntime( 3635): Calling main entry com.android.commands.am.Am
E/memtrack( 3658): Couldn't load memtrack module (No such file or directory)
E/android.os.Debug( 3658): failed to load memtrack module: -2
D/AndroidRuntime( 3658): Calling main entry com.android.commands.am.Am
D/AndroidRuntime( 3635): Shutting down VM
E/cutils-trace( 3635): Error opening trace file: No such file or directory (2)
D/dalvikvm( 3635): GC_CONCURRENT freed 96K, 15% free 593K/692K, paused 1ms+1ms, total 13ms
D/AndroidRuntime( 3658): Shutting down VM
E/cutils-trace( 3658): Error opening trace file: No such file or directory (2)
D/dalvikvm( 3658): GC_CONCURRENT freed 96K, 15% free 593K/692K, paused 1ms+2ms, total 9ms
I/Choreographer( 3526): Skipped 444 frames! The application may be doing too much work on its main thread.
E/Aero ( 3019): Output from su-Operation: /system: 55002112 bytes was trimmed
E/Aero ( 3019): Either an error occurred or trimming was successful.
E/Aero ( 3019): java.lang.NullPointerException
E/Aero ( 3019):	at com.aero.control.fragments.MemoryFragment$5$1$1.run(MemoryFragment.java:287)
E/Aero ( 3019):	at java.lang.Thread.run(Thread.java:841)
D/ConnectivityService( 1781): Sampling interval elapsed, updating statistics ..
D/MotoWrigley3GRIL( 2098): Got data call list message, now has 1 connections

The trimming output is present (/system: 55002112 bytes was trimmed), so it has probably trimmed but the progress bar popup doesn't go away until i tap on the screen somewhere .