So as you can see from the notice above, (
https://bitcointalk.org/index.php?topic=2702103.0 )
Electrum is vulnerable, and has been for quite a while. Its just that they have discovered it now, and also that their first fix wasn't a fix either, that have upgraded it again.
I for one am not feeling much better after this upgrade either, because tomorrow maybe another one like this.
So is it time to move from electrum to another option?
What do you guys think?
You should always consider another option,there is many other wallets out there and they are free to use.But if you have some significant amount of
BTC or any other altocins every desktop wallet can represent potential threat in any moment.Electrum is fix their vulnerablity in version 3.0.5 and it should be safe to use it now,but as you say they can discover some other vulnerablity next day or in few months/year.
Although this vulnerablity could have been full exploited only if user did not set decent password on wallet,and I think that most users of Electrum set password when they install wallet,so except reputations of Electrum there is no major damage to users.
Only thing which I can suggest is to seriously consider some hardware wallet,I use my Ledger Nano S in combination with Electrum
BTC-It have nice&functional interface and your private keys are always safe inside device.