[XPERIA X1 Q&A, Help & Troubleshooting] melaskalany:
Thanks, ideas and more questions!

Hi Russell. Thank you for all the tips and solutions you offered.

As for why I posted in the X1 general forum, it's mainly because I was an X1 user until its Tx/Rx Power Amplifier chip died on me. I only use it as a PPC now. I thought the thread could be helpful for current M1 users on XDA (and they are growing in number) as well as for X1/X2 users who are considering a migration (I can't call it an upgrade really) or those of them who are just curious, since the software is identical.

Here is my reply to your solutions and suggestions:

The Incoming Call problem: It doesn't seem to happen if you're using the Sony Ericsson Panel! A good solution too will be disabling the XPERIA dialer on the M1 and using the default WM6.5.3 dialer. I will give it a try.

Garmin Mobile XT: Thanks for the explanation. I recently purchased Garmin City Navigator Maps for the Middle East and Northern Africa NT, investing US $100, to use them on my phone. The application itself is running flawlessly and has all the features that I need (trip computer, flight status, weather, etc...) so I will just keep it. A work around for the problem will be launching Garmin from the Sony Ericsson Panel. The black background will make the strip black and you will not notice any discontinuity. Using a black background on your Today screen won't hide the problem though; the text showing the date will still appear.

Did you notice that I was talking about the Music Player in the "On-the-Road" Panel and not Slideview? Slideview is working just fine on my phone. In fact it's perfect with no bugs whatsoever. It's the player found on the second tab on the "On-the-Road" Panel that is not working properly. I thought about this yesterday; maybe uninstalling Slideview will fix the problem, since the system is using it as the default media player. I have two suggestions regarding this issue:

A workaround will be using Slideview to play music. But then again, just like its elder sibling, The Media Xperiance Panel, Slideview doesn't recognise multi-disc albums; i.e. it doesn't play tracks from a multi-disc album in order. It plays one track from the first disc then one from the second then goes back to the first and so on (i.e. 1-01 > 2-01 > 1-02 > 2-02 >...... 1-n > 2-m) instead of playing disc 1 first (1-01 > 1-02 >.....> 1-n), then disc 2 (2-01 > 2-02 >.....> 2-m).

The player in "On-the-Road" Panel on my X1 recognised multi-disc albums and played them in order. I don't see any reason for SE developers changing the playback section of the code for the M1 version of the Panel. But then again, now that the Panel supports choosing any of the installed programs as the default Map application, there is a possibility that the code received a comprehensive overhaul.

Is there a way to force Windows Media Player as the default media player? A registry setting maybe?! Because I am guessing that the panel player is calling Slideview with a wrong parameter or a parameter that is only valid for Windows Media Player and that's what is causing the panel player to freeze at the end of every track? Or maybe it's still calling Windows Media Player but somehow Slideview has crippled it?