Plugins fails to Update

So at first it was just 1 plug-in that failed up Update, but now it’s 2…

JetPack and NextGEN – When I select these 2 plug-ins to Update them, my web site is stuck in maintenance mode for a good 15 minutes. I read that if I delete the .maintenance file, it will go away and I will have the site back – and True enough – this works, but the Plug-ins never Update.

And if I try it again, the same issue, stuck and then I have to delete the .maintenance mode file – I have access to the whole server since I run it my self…

What do I need to do ?

I never had this problem until I upgraded to 3.9.1

Thanks for the help ahead of time!

Ray