First I would like to thank all colleagues who answer for my letter about spontaneus firening of SB-28. Now I know that is a common problem of the flash (not of the F90x) and I will take back my flash to the dealer. But have you any sugestions how could I check the new flash ? In archives of our list one sugested to check the lamp on the body, that is OK method for a while but I read the misfiring could heppen after weeks of work. So do you know numbers of misfiring fleshes ? My dealer has a lamp from US, German and Switzerland market - what are yours suggestion from which one I should get new flesh - where is the lowest risk of getting misfiring flashes ? By the way my old SB-28 is from Switzerland. Thanks in advance [EMAIL PROTECTED]