Cycles 2.63 vs 2.62

Wondering if anybody else is experiencing the same issue.

I just downloaded version 2.63 of blender and noticed that scenes rendered using cycles seem to be a lot noisier (loads of bright speckles).

I did a quick test (100 render cycles) rendering exactly the same scene in 2.62 and 2.63 and it does seem to be the case.

http://www.jupiterrising.co.uk/Blender/262a.jpg

http://www.jupiterrising.co.uk/Blender/263a.jpg

Even though the same environment map is being used - the colours/lighting seems to be different (brighter in 2.63). Has anyone else experienced this - and more to the point, do you know any workarounds. In 2.62, the environment map is set to Linear colour space with a gamma of 1.5 and a strength of 5.0. In 2.63, the Linear option has gone and has been replaced with Color and Equirectangular - Gamma and strength are the same.

I have tried turning gamma and strength down in 2.63 to match the lighting of 2.62, and although I can achieve a similar lighting level - the noise remains. The other odd thing is that as the render goes on beyond 100 samples - the noise/bright speckles actually seem to get worse.

Thanks

Nevermind. Found a tip whilst searching for something else - upped the “Clamp” value in the integrator settings to 1.3 - seems to have cured the noise issue.