I have the same problem, but dont have the solution

next time, if you want to delete a media file, you should open Video/Music or Galery then delete the file you want to. Not delete it in file browser
Try to copy this file to your Archos and do what i said (i have tried once)

You should touch the screen and hold for 2 seconds, then swipe as you do when dont connect to the TV

The led is still on sometime, even thought the screen is off and no application is running
Sometime, the led is on, the screen is off, and i cant turn on the screen, so i have to reboot. Worse than the previous firmware
And, i ran the stock music application at night. After a period of time, i heard ...

Archos.com said: "Installing the SDE firmware is considered by ARCHOS as a voiding of the warranty", so they can reject the warranty if the device was installed SDE, i think so. The sentence is so clear.

The Player cannot play splitted files
(Archos 101IT, v.2.3.81)

There is a soft named ASProxy (paid soft) said that the Archos can access the internet using proxy if you use it (the soft).
Otherwise, i dont know how to use proxy in some "system" app such as Market, Youtube.
You can try to use Statis IP, configure everything of the network

I think it happens when the system is busy (for some reasons). I met it usually, the led is on, the screen is off, but cant do anything except waiting

Sometime, Archos 101IT rebooted when i used wifi, but didnt loop as v.2.3.26.
- Led is on although no soft is running
- Cant open a picture in Total Commander (maybe third party soft), only load the thumnail. But it can when zoom out

I found a battery indicator (BI) mistake: after i played a game on my archos 101, installed v2.3.26, the BI showed 41% remained, i turned off the screen, then turned on after 5 minutes, the BI showed 44% remained, 5 minutes aftes, it was 45%, then 5 minutes after, it was 41%, although i did nothing ...