I use my 5800 a lot and have run it through its paces since I updated to the latest firmware about 1 week ago. I have to say that a few small improvements have been outweighed but a load of bugs.
1. Phone is quite often unresponsive when moving in/out of apps and even in between its core menus, sometimes the screen is black through this, other times you can see the menu but nothing works. Time lag is sometimes in excess of 5 seconds, way to long to wait for a menu to appear.
2. I have seen my phone sitting on the table and it just reboots itself.
3. Scroll bar not working when in pictures/video gallery and the phone is in landscape mode. The scroll bar works fine in portrait mode.
4. Contact ringtones not consistent, in fact the phone for no apparent reason just plays another song as a contact's ringtone, and other times they ring, the correct ringtone is heard. This has only happened a couple of times, nonetheless, it never happened before.
5. The sensitivity of the screen rotate has been dulled down so much that sometimes you need to move it back and forth, up and down and wait for it to realise it is supposed to change from portrait to landscape and vice-versa. It reacts like a priimitive, clumsy phone, instead of a slick piece of technology it looked like being.
6. It also seems pressing buttons on the touch screen are now even more inconsistent, the web browser button to switch between full screen and menu buttons sometimes needs to be tapped about 5 times for it to work, other times you press a button and wait 3 seconds for the vibration feedback and for the function of the button to activate.
The things they have changed (music player, web browser etc) really don't do anything to drastically improve the experience of the phone, why isn't Noka listening to the users of these phones and giving people features that already exist in older phones, ie calendar entries related to contact birthdays, an easy to access clock when screen is locked etc and more than anything making it a phone that does its basic functions 100% spot on These updates v30-v40-v50 seem to be reducing the functionality of this phone, not improving it. I used to love my 5800, now with v50.0.005, I find I am being frustrated as much with it as anyone on the planet who uses microsoft windows. It would be interesting if anyone else is experiencing these problems.