What is the problem with my desktop imac, that ical has frequent pop ups that say I am not connected to the internet, gives me an option of going offline.

Question

What is the problem with my imac, that ical has frequent pop ups that indicate I am not connected to the server. Gives me an option of going offline. This seems to have started when I began using icloud with all of my devices.

Answer 1

I discovered a simple work-around that is successful (at this point in time anyways) on my IMAC/Maverick when sending attachments (not inline or embedded) to PC users.
There are several threads in here on why attachments embed in mac mail when sending to PCs, and I have had similar issues. Not sure where the fault lies, but other than purchasing an additional program to make mac mail work as other mail programs work when it comes to attachments, I found no real solution that worked for my business PC folks. I did all the right things - sent my attachments in mac mail "windows friendly,"  "plain text," and "attachments at the end" and still got complaints when sending to my pc workmates using Outlook.  I tried another suggestion I found here - zipping the files and sending the zipped file, but my workmates did not like that either and still asked why? 
By trial and error I discovered that when I attach any pdf to the email as well as the questionable jpgs, the attachments arrive in their PC inbox as attachments that can be used as needed. I don't know why this works, but it has made sending attachments a happier task for my business group.
I would be interested to see if this works for others.