[Tilt, TyTN II, MDA Vario III General] ziggykd:
The following (long!) post was originally posted at the PointUI forum, but I thought it best to cross post it here. I've tried to organize it as best as I can and appreciate those with the patience to read it and the good will to offer help.

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My AT&T Tilt (HTC TyTN II) is basically out of commision right now, and I can only track the source of the problems back to the latest update of PointUI (v1.02b, Feb. 4th 2008), as I've done nothing else with the phone since. However, seeing as how I've uninstalled PointUI and the problems persist (and are getting worse), I suspect a virus is afoot, or some other lovely problem.

Since the update, I've experienced the same problems as everyone else on this PointUI thread (system hangs on "running apps" screen and randomly), but in addition to that, several other things. I am running the stock AT&T ROM without the bloatware. These have been my symptoms for the most part since then:

Periodically, animations between menus would slow down considerably and sometimes freeze for a moment, even when I had nothing else running in the background. This would happen for any menu: the cog, the bottom bar, favorites, etc.

The touchscreen would stop working (usually, only within PointUI). This usually happened when animations would slow down, but it would also occur alone, randomly. The hardware buttons would still work during touchscreen failure, usually, but sometimes they wouldn't, and I would have to soft reset.

Sometimes, the power button wouldn't work, and I would press it several times thinking I didn't do it hard enough the first few times. After ~20 seconds, the screen would turn itself off and on. When the screen was on, it would not responding to touches.

The PointUI top bar that appears when using any application would, at random, not work. By this I mean when I would tap it, it's like it wasn't even there -- the Start menu would come down, or the volume control, date/time, etc. depending on where I tapped it. Also, the top right button (red X, or the check mark) would not display correctly in programs or the today screen (a check mark when it should be an X, etc.), randomly, and would not be responsive.

Yesterday (Feb. 23rd), things took a turn for the worse. Here's what happened:

When I started up Tom Tom, the screen went completely non-responsive. Only buttons would work.

After exiting Tom Tom (in an attempt to restart it), the touchscreen would continue not to work, both in PointUI and regular old Windows.

Shortly following this, buttons would stop working, and the entire phone would freeze up. Couldn't turn the touchscreen on and off. I did a soft reset.

During startup, when it showed the AT&T logo, the screen dimmed itself to the lowest brightness setting (it never does this). It would remain this way all the way through the bootup process and into Windows as well, never getting any brighter. Even after going to the backlight settings and increasing the brightness, the screen would get brighter, but would never turn off.

Once in Windows, the touchscreen was completely non-responsive. Buttons would still work, but everything would move really slow.

The screen would never turn itself off. Also, when pressing buttons, the screen would never get any brighter.

After mashing the buttons a bit (in anger, yes, but lightly), the touchscreen alignment application came up, asking me to touch the screen in a few places. This worked.

Then, a call came in. The screen froze during the animation for the notification of an incoming call. Also, the phone started to ring, but within 1 second stopped. However, it would vibrate nonstop (my phone is setup to ring and vibrate at the same time) till the end of the earth!

At this point, none of the buttons would work, not even the power button. Did a soft reset.

This was followed by the same exact symptoms ~4 times (touch screen not working, never turning off and staying at the same brightness level, etc). Outgoing calls would work ok, but each time, a call would come in and freeze up my phone.

Eventually, after several resets, the touchscreen would work without having to mash the buttons to get the touchscreen alignment app running. However, it would still freeze on incoming calls (only).

Somewhere between all the resets, I realized that sliding out the keyboard would never switch the screen to landscape. I can still type and my text would show up on-screen, and screen taps still work properly (even touchflo), but all of this would occur while still in portrait mode.

Lastly, the power button would only work once. It can turn the screen off, but not back on, ever.

Somewhere, between the resets, I uninstalled PointUI, which did nothing. I also tried running Sprite Backup, which would never open (and still doesn't at time of writing)!

Before the PointUI update, none of these symptoms were present (earlier release was v1.01b, used since early January). After the update, they began creeping up, getting worse over time. I have installed nothing else since the update, and have only ever sync'd the phone with my computer to charge it.

Today (Feb. 24th), it started getting a little worse...

When I make calls, sometimes the microphone doesn't work at all. I can hear the person I'm calling, but they can't hear me.

Sometimes, the green phone button won't start the phone application.

Power button isn't turning off the screen anymore at all.

This is the current status of the phone. Weathered, battered and beaten, it marches on, still capable of opening the HTC Audio Manager and playing my MP3's in consolation. :(

Any help regarding the source of these issues is greatly appreciated. :)

Some additional notes/summary:

I am running the stock AT&T ROM without the bloatware.

I haven't dropped the phone or let it get wet.

I may hard reset sometime this coming week, probably Monday. The first thing I'll do is reinstall PointUI v1.02b, and maybe TomTom. We'll see how that goes.

You know, the more I read this post, the more it seems like a virus.