jailbreaking iPhone 4S iOS 5.1.1 with Absinthe 2.0.
On Cydia, some packages' descriptions are showing up but some are not, although these packages are under the same BigBoss repository. That's not a big deal because Cydia still able to install the missing details apps as usual but a bit annoying when looking at a blank page without knowing any details of the app.
My guess the reason that cause this problem is Cydia didn't initiate properly while preparing filesystem due to heavy traffic on their server. It always happens when a new jailbreak tool just released. Large number of users load Cydia after newly jailbroken causing the high traffic on Cydia server.
How I fix it?
Restore the firmware and jailbreak again. Easy as that. Now all the package descriptions are showing.
Cydia and ZodTTD servers still slow at the time of writing this post. So my advice is whenever you get any "timed out" error message in cydia, wait until their servers not overloaded and load the packages again.