I don't use Photobucket so I'm shooting in the dark. I use SmugMug and how I post images is:
Open the image in SMugMug to the size I want displayed in my post.
Right click the image and Copy the URL
In my Lat-G post I put the cursor on the line I want the image
Click on the Insert Image icon
The text line that opens will have the "http://" highlighted in blue
Since the photo URL copied already has the http:// I hover the cursor over that and right click which deletes it and then click paste.
Then click OK
The line in the post should insert like this:
[IMG] http: //www.smugmug.com/gallery/n-xZ4Vt/ i-cgxGwnH [/IMG]
Note: I put spaces in the line to deactivate the image and just show the characters.
I'm using Win8 64 bit and Chrome and haven't had any image issues. Adobe is set to auto-update on my laptop.