i am completing work units but not getting any credits for it what gives

1) You did not specify what or which project(s) you are doing work for. Please provide more details.
2) 99.99% of all BOINC projects require 2 or more people (also called a "wing mate" by some of us) to correctly run and return the same task in order for credit to be awarded.**
**Depending on the project, that process can take a few hours; a few day days; a few weeks or several months.

i have been getting creadits for yeas no probs just in the last week i have got none have not changed any thing

http://boincstats.com/en/stats/-1/user/detail/2448734/projectList

That still does NOT tell me what projects you are currently running on your computer(s).

What are the USER NAME(S) you are registered under at the projects running on your computer(s)?

Have you recently changed your USER NAME(S) and/or changed your email address and/or setup NEW accounts on some of the projects?

At the projects you have listed on your account "fin64", you have 4 different USER NAMES on the stats page (STATS are linked by email address).
Active Projects:
"MICHAEL" > Asteroids@home, LHC@Home Classic, SETI@Home, SZTAKI Desktop Grid.
"Michael" > Constellation, Cosmology@Home.
"fin64" > Climate Prediction (aka CPDN), Einstein@Home, MilkyWay@home, Rosetta@Home.

And on the 3 Retired Projets:
"fin64" > Chess960@Home, Spinhenge@home.
"grizzly" > SIMAP.