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Showing posts from March, 2011

Fedora 15 & GNOME3, initial impression

So I upgraded my machine to Fedora 15 last night using preupgrade, and spent hours in trying to clean up my /home from ancient stuff since way back to Fedora 5 as they were causing weird issues.

To those who are wondering: No, Fedora 15 beta is not out yet, its still in late alpha. Beta should be released in few weeks time, but I'm too excited to wait :P. Check out the Fedora 15 schedule for details on release dates.

Upgrade experience

The first several tries to upgrade using preupgrade failed with a "no more mirrors to try" error. After some debugging I found out that preupgrade-1.1.8 was trying to download images/stage2.img, which apparently, no longer around in Fedora 15. Grabbed preupgrade-1.1.9 from koji and the upgrade goes perfectly without issues.

First boot
The bootup went totally fine, and fast, not as fast as the hype said they are, but definitely way faster than Fedora 14 bootup, thanks to Lennart Poettering's systemd!. Quite likely its some of the custom scri…

The problem with time and age of universe (or age of anything celestial)

(ok this is quite a random post, but something that have been on my mind for quite some time)

As we all already know from Einstein theory of relativity, time, is relative to gravity and speed of the observer. An observer which moves at a faster speed experiences time which is slower than another observer which moves at a slower speed. An observer which on a planet with higher gravity experiences time which is slower than an observer which on a planet with a lower gravity.

In the big bang theory, the universe started off at a singularity point which have near infinity mass, with near zero volume, leading to a near infinity gravity. If there is an observer during the big bang, and the observer is within at the point which have the highest gravity, the observer will observe that it tooks longer for the big bang to happen and expand to bunch of galaxies than an observer who are outside the singularity's gravitational field, whom might observe the big bang happened and expanded to bunch …