OS: SLED 11 SP2 x864
HW: Dell Latitude E5420

Didn't experience/face the following problem with SLED 11 SP1 i586 on the same HW.

Problem occurs only when:
if notebook is running on AC Power, and battery is not fully(100%) charged

Solution/remedy:
problem gone as soon battery charged 100% or if I disconnect the power, i.e put the system on DC power(on battery)

Problem:
1 - Mouse/Curser start moving very slow... like you are accessing the system via vnc.
2 - 'top' shows that 'kworker' alone is consuming 36% of cpu constantly
Code:
top - 00:38:32 up 59 min,  4 users,  load average: 1.91, 1.57, 0.86
Tasks: 188 total,   1 running, 187 sleeping,   0 stopped,   0 zombie
Cpu(s):  2.7%us,  3.1%sy,  0.0%ni, 92.3%id,  2.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   8085988k total,  2725724k used,  5360264k free,   144076k buffers
Swap:  2096444k total,        0k used,  2096444k free,  2140064k cached

  PID USER      PR  NI  VIRT  RES  SHR S   %CPU %MEM    TIME+  COMMAND                                                                                                 
10669 root      20   0     0    0    0 D     22  0.0   0:56.15 kworker/3:3                                                                                             
10606 root      20   0     0    0    0 S     14  0.0   0:49.80 kworker/1:1                                                                                             
   93 root      20   0     0    0    0 D      4  0.0   0:05.49 kworker/u:5                                                                                             
 2444 root      20   0  132m  25m  11m S      2  0.3   0:54.40 X                                                                                                       
 4630 msharf    20   0  240m  17m  11m S      2  0.2   0:05.26 gnome-terminal                                                                                          
    1 root      20   0 10528  876  744 S      0  0.0   0:02.14 init                                                                                                    
    2 root      20   0     0    0    0 S      0  0.0   0:00.00 kthreadd
3 - ps aux |grep 'kworker' shows following
Code:
root     23153  0.2  0.0      0     0 ?        S    12:53   0:03 [kworker/1:2]
root     26633  0.1  0.0      0     0 ?        S    12:57   0:01 [kworker/3:0]
root     26818  8.7  0.0      0     0 ?        D    12:57   1:59 [kworker/2:0]
root     27172  0.0  0.0      0     0 ?        S    11:59   0:00 [kworker/1:3]
root     27402  6.5  0.0      0     0 ?        S    12:57   1:26 [kworker/0:1]
root     28852  0.0  0.0      0     0 ?        S    12:05   0:02 [kworker/1:0]
root        92  0.1  0.0      0     0 ?        D    11:35   0:10 [kworker/u:4]
root        93  0.3  0.0      0     0 ?        S    11:35   0:21 [kworker/u:5]
root      4743  0.0  0.0      0     0 ?        S    13:06   0:00 [kworker/3:1]
root      5759  4.5  0.0      0     0 ?        S    12:38   1:52 [kworker/0:3]
root      7327  7.3  0.0      0     0 ?        S    13:08   0:51 [kworker/2:2]
root     12484  0.0  0.0      0     0 ?        S    13:12   0:00 [kworker/0:0]
root     13891  0.0  0.0      0     0 ?        S    13:14   0:00 [kworker/2:1]
root     15858  0.0  0.0      0     0 ?        S    11:48   0:02 [kworker/3:2]
root     16894  0.0  0.0      0     0 ?        S    12:48   0:00 [kworker/3:3]
root     16926  0.0  0.0      0     0 ?        S    12:23   0:01 [kworker/1:1]
root     18354  0.0  0.0      0     0 ?        S    13:18   0:00 [kworker/0:2]
what should I do ?
I have SLE support.. May I open a Bug Report ? how ?
Please help

Regards
Muhammad Sharfuddin