Do wallets detect fork and warn for it?

[Amph]

 We need functional and fully trustable non-full clients or else we die.  

We do.  its called Electrum.

Huh, did you were here a couple days ago? All SPV wallets suffered from a high risk of non valid transactions due the blockchain split, and guess what, Electrum is a SPV wallet. Basically any wallet that wasn't an updated core wallet was under risk.

You:  We need non-full clients.
Me:  There are some.
You:  But they aren't full clients.

SPV wallets can't be fully trusted as seen 2 days ago.

never bothered with those lighwallet, i know they can be good for newcomers who do not want to dl 40 giga or something, but even with a 8mega connection, it isn't a pain in the ass to download the whole chain...

everything is 40 giga nowadays, game movie, we are not in 2005 anymore....

Nothing can ever be "fully trusted" except your own node if you want to take that thinking to its logical conclusion.
However, for most of the time and especially smaller payments, SPV works great.

i still think that miners should only use core for their mining activity

[Hazir]

never bothered with those lighwallet, i know they can be good for newcomers who do not want to dl 40 giga or something, but even with a 8mega connection, it isn't a pain in the ass to download the whole chain...

everything is 40 giga nowadays, game movie, we are not in 2005 anymore....

Nothing can ever be "fully trusted" except your own node if you want to take that thinking to its logical conclusion.
However, for most of the time and especially smaller payments, SPV works great.

i still think that miners should only use core for their mining activity

I was of the same opinion but then I discovered that there are some places where internet connection is still a luxury.
People don't have limitless bandwidth and fast connection and downloading plus 40GB of Blockchain is a killer for them.
As for the miners, if they are professionals - and they should be if they mine, (because 'normal' bitcoin users don't mine anymore) of course they want to have full note wallet.

[pereira4]

 We need functional and fully trustable non-full clients or else we die.  

We do.  its called Electrum.

Huh, did you were here a couple days ago? All SPV wallets suffered from a high risk of non valid transactions due the blockchain split, and guess what, Electrum is a SPV wallet. Basically any wallet that wasn't an updated core wallet was under risk.

You:  We need non-full clients.
Me:  There are some.
You:  But they aren't full clients.

SPV wallets can't be fully trusted as seen 2 days ago.

never bothered with those lighwallet, i know they can be good for newcomers who do not want to dl 40 giga or something, but even with a 8mega connection, it isn't a pain in the ass to download the whole chain...

everything is 40 giga nowadays, game movie, we are not in 2005 anymore....

Nothing can ever be "fully trusted" except your own node if you want to take that thinking to its logical conclusion.
However, for most of the time and especially smaller payments, SPV works great.

i still think that miners should only use core for their mining activity

It's not only the download time (which is slow af even if you have a good connection, because sometimes the client is just slow at getting peers) it's also slow at processing the blockchain if you don't have a legit good computer. It takes way too much memory.
BTC without lightweight clients taht you can trust = will never be a success. BTW, it seems it still happening:

https://bitcoin.org/en/alert/2015-07-04-spv-mining

We need all of this solved before mainstream takes over