When I opened this SR I informed the Support that we only starting facing this issue after installing SLE 11 SP2 x864, before we were running SLE 11 SP1 on the same HW for almost 6 to 7 months without any problem.
Almost after 10 days of opening this SR they asked me to update the Firmware to fix this issue(though I have informed them that on the same machine I was running SLE 11 SP1 without any problem). As per their request I update the Firmware without luck, i.e I am still facing the same issue.
on May 16th, to fix the issue, support asked me to use a workaround, that I am already aware and practicing since April 06th.
I then complain the Support about the level of support and their behavior on Thursday(17th May), but no reply received yet.