Bluetooth and wifi problems

[cyapalmos]

After updating to 4.3 I'm having an intermittent problem.  When I'm on wifi AND trying to use my Kensington bluetooth keyboard, the tablet flips out and loses wifi connection.  It doesn't happen all the time.  I'm trying to figure out a pattern.  I've removed and re-paired the keyboard.  Charged everything up, rebooted the tablet...  This same keyboard worked perfectly with 4.2.2

I'm wondering if anyone else has noticed this?  I'm starting to wonder if I'm crazy  

SGP312 on 4.3 (10.4.B.0.577)

Kensington KeyFolio Pro 2 BT keyboard

[Michel4632-2]

I'm afraid that this is a comeback of the problem that was present with android 4.1... The problem has never been clearly acknowledged by Sony, but the upgrade to 4.2 magically fixed it... Now it is back (to a lesser extend) with 4.3... (together with the loss of the quick launch bar... Loosing features and bringing back a disfunctionality, that's a valuable upgrade! And of course, it is impossible to downgrade easily... I must say that so far this tablet has proven to me that it can work properly but my customer experience is ruined by these software flaws)