The eleventh, twelfth and fifteenth time Jazz came online, it was to the sound of his own scream. Apparently, once awakened, the memories just didn't want to go away. Jazz took a moment to reorient himself, and ran a gentle hand over his plating. It was intact, of course, but the light scrape of his own claws made him flinch and jerk his hand away.

It was utterly ridiculous to get freaked out by ones own touch, but try as he might, he couldn't help it. In the darkness of the storage room, Jazz groaned and thumped his head against the wall.

Several rooms away, Megatron stretched on his berth and smirked.

The base was simply buzzing with curiosity, and the bets were flying high on the subject of why was Jazz suddenly a twitching bundle of paranoid wires, while Megatron floated around like a ten ton metal balloon filled with glee.
The reason was simple - it felt freaking good to have the Autobot cringing at the mere sight of him; there was also the matter of the Allspark. It was picking up Jazz's distress, and every now and then it would spike, demanding for the scared bot to be protected. And then Megatron would patiently check Jazz's location and status on the monitors - See? He's perfectly safe - and the allspark would shut up until the next panic attack.
And Megatron's own spark would fly at the double victory of scaring the Autobot AND outsmarting the pesky device.

But since the tyrant wouldn't confide any of this in his crew, the Decepticons were left guessing. Some of them were a little nervous just on principle (because, no matter what species you are, it's never a good sign when your tyrannical boss suddenly starts skipping around with a happy smile on his face).

Some of them were amused by the sudden change (the ones who didn't like Jazz, and/or were too young to know that it's never a good sign when... etc).
Some ignored the situation altogether.
And then there was Scavenger.

Scavenger was worried. He'd done several checkups on Jazz systems, but he couldn't find a single thing wrong with him. Which only upset him further, because something obviously was wrong. Mechs didn't just start screaming in the middle of recharge for no reason. And as the time progressed, it only got worse, and Jazz wouldn't tell him what was wrong. In fact, Jazz-the-merry, Jazz-the-annoying-chatter-box, Jazz-the-king-of-life, was now barely speaking at all. He would just sit in some closet, gaping at the wall, and ignore Scavenger's attempts to cheer him up. At his wits ends and getting desperate, the mechanic decided to resort to drastic measures.