Time Error and Log In Drop outs

[Impromptu]

Hi guys,

I have a website: www.supercoachscores.com which has been running really well.

However, in the past few weeks I have issues. My issues are as follows:

1. The time on vbulletin at the bottom of the page is sometimes wrong, ie sometimes it's correct and sometimes it's 15 minutes in the future. However, if it's 15 minutes in the future, I press F5 (ie refresh) a few times it changes the time
2. As a consequence of point 1, sometimes people are logged in at the correct time and sometimes at the incorrect time. Therefore, sometimes people are posting in the future.

I am not sure what's wrong and it's very frustrating. I have looked at the langage, time and timezone settings and it appears correct and I know that the time is different for those logged in and those not logged in.

Any ideas anyone?

Cheers Jay