Dafuk my HD Tach looks terrible again after a few months after the fix. They should upgrade every 840 evo owner to an 850 evo. Will think twice about buying Samsung again.

Certainly. But only if the 850 Evo won't develop similar problems. I won't buy any budget class SSDs from them I guess, I'm already upset because I got two 840 Evos before this came out.

Sorry guys, I'm a little confused what I should be looking for. I used the program mentioned (directly after a restart and with real time scanning turned off) and got a result of 'Average Data Read Speed: 179MB'... Am I correct in thinking that while that isn't the end of the world, I am indeed affected by the issue?

Yes, I think you're definitely affected! You've probably got a SATA 2 connection have you based on the age of your system? Even so, with SATA 2 I think you can expect the high 200's not the high 100's that you've seen. You can use a program called DiskFresh to rewrite all the data on your drive to bring it back up to full speed.

) and got a result of 'Average Data Read Speed: 179MB'... Am I correct in thinking that while that isn't the end of the world, I am indeed affected by the issue?

My Sata 2 gives 197 MB/s - about the same.

Yes, I think you're definitely affected! You've probably got a SATA 2 connection have you based on the age of your system? Even so, with SATA 2 I think you can expect the high 200's not the high 100's that you've seen. You can use a program called DiskFresh to rewrite all the data on your drive to bring it back up to full speed.

Ah, indeed you are correct. I have an identical EVO in my ASUS i5 laptop so I'll give that a run and see what happens. I'll have a look at the DiskFresh too... so thanks.