Is this Aweb site falling apart

In view of the following

• Loss of preview button on posting
• Inability of CSS to work on home page without a wait (1st 4 picture items)
• Posting questions - sometimes seem to not 'take' first time resulting in a second/third button press and multiple resulting identical questions. Simple to fix, just disable the post button once it has been pressed
• Inability to handle anon in the correct manner - i.e. associate it with the underlying poster but just show anon to the screen
• Overall speed
• Often in the early morning the site just doesn't respond at all