OK i solved my clock issue.

For anyone who has the same problems as I do, i am just going to say what i did. But no guarantee that it works for you too, as i am just a normal user.

I went to /usr/share/themes/base/meegotouch/clock/style/

then i found out that there are actually several copies of "clock.css". One clock.css.fdb and one clock.css.orig

taking a bet that clock.css.orig is the backup of the default clock.css, i copy it into the same folder, renaming it as clock.css

after which, my clock and alarm works fine.