After Trados 2015 s3 update, I go back into studio and it tells me I have another update?

Hi there

I have just updated from SR2 to SR3 for TRADOS studio 2015.   I was told it was successful at the end of the process but also when I (a) right clicked on properties from the desktop and saw that it says 'Properties of .... SR3' and of course (b) when I opened it and it said at some point it's sr3.  However, I am now being told after going into it, to start a job, of another upgrade (program: World server components version 4.3.5262.0 to version 4.3.5265.0).  Do I have to upgrade again? I have a job to do and would rather get on with it.

Also, the download of version sr3 does not appear in my download folder.  The version in my download folder is still SR2 from last year.  Does this mean anything?

Is there a version sr3 for multiterm?  Or is still sr2 even when trados has moved onto sr3?

Thanks in advance