Dear Eskimo, Paul
I have had variants on these issues for some time. Sorry, no solutions yet. Here is some info.
I have the same problem now with Safari 7.0.3. I have tried installing twice, it is showing as having installed twice “in last 30 days”, and also still showing as an update; nevertheless mine remains fixed on 7.0.2.
Since Mavericks I have been having problems with App Store, notably the repeated downloading of Apple apps. I have posted on a number of threads here, but no solution. I decided to wait for 10.9.2.
When it came out, I did a completely clean install of 10.9.2. Hard disk wiped, reformatted and checked. OS install from USB drive. All apps reinstalled as latest versions from App Store, developer sites or in the case of Microsoft/Adobe from DVD. Only my data files were copied over manually from external drives. A clean install. No Time Machine, Recovery Disk. Within a week the repeated downloading of iMovie and iWork apps started again.
At this point I went to Apple Support. I received a lot of time from them, and was quickly passed up the chain as they said they knew of the issue but that they thought they had cured it in 10.9.2. They went through my logs, but couldn’t find anything particular except to say start again, do another clean install and install the apps progressively starting with the Apple apps to see if anything set it off. I did this, and finished without anything special happening (I have quite a few apps but nothing unusual, all mainstream). I updated to iBooks 1.0.1 and iTunes without problem. Then a week or two later the Pages 5.2, Numbers and Keynote updates showed up and the repeated downloading started again, including iMovie (before the 10.0.3 came along). And the Safari 7.0.3 update issue as described by OP.
As they requested I have sent my logs to Apple, but no reply yet. I will post if a solution is suggested.
I am sure Dahveed is correct in saying that millions are not seeing this, and since 10.9.2 the complaints here have dropped off, but I don’t agree its a trivial local issue. It feels like an issue at Apple’s end in the App Store. It seems like Mavericks has caused or more likely revealed some sort of fault/corruption in a small number of users App Store accounts. I think the info displayed in my windows of App Store is defined by the App Store not by the local computer; often on the Update page it is erroneous.
Another place you can check on versions installed is in the HD/Library/Receipts/InstallHistory.plist. Good luck.