Recently I upgraded my Opensuse 13.1 to 13.2. The upgrade went just fine. No errors.

I use KDE, and in particular for this e-mail I use kmail.

In 13.1, when I "check mail", the mail is processed through my filter rules in under a second (for even over 100 messages). Now, in 13.2, it can take a couple of minutes to process a couple of messages through the same filter rules. I ran "top" and saw that akonadi is maxing out the cpu. (see screenshot)

Code:
top - 11:49:55 up 2 days, 20:43,  8 users,  load average: 0.31, 0.08, 0.07
Tasks: 216 total,   2 running, 214 sleeping,   0 stopped,   0 zombie
%Cpu(s):  4.5 us,  1.3 sy,  0.0 ni, 93.7 id,  0.5 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem:  16448392 total,  4011128 used, 12437264 free,   256196 buffers
KiB Swap:  7132816 total,      324 used,  7132492 free.  2596496 cached Mem


  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                                                                      
 2127 mark      20   0  777336 217632  60184 R 100.0 1.323  13:29.64 akonadi_mailfil                                                                                                              
    1 root      20   0   36052   5864   3392 S 0.000 0.036   0:03.96 systemd                                                                                                                      
    2 root      20   0       0      0      0 S 0.000 0.000   0:00.03 kthreadd                                                                                                                     
    3 root      20   0       0      0      0 S 0.000 0.000   0:01.56 ksoftirqd/0                                                                                                                  
    5 root       0 -20       0      0      0 S 0.000 0.000   0:00.00 kworker/0:0H           
Would someone please suggest either steps to further narrow down this problem, or if it is a known issue, how to solve it?

Many thanks,

Mark