Forum dates/time are off by an hour

[MrEyes]

Hello all,

I have been running my forum without any problems for some time now. However today at around 11:50 the site went down for around 30 seconds (currently being investigated by the host). When it came back everything seems to be working fine apart from the times on forum activity.

For example, a post made today at 13:46 is showing as 12:46

I have run the following PHP on the server:

$date = date( "d/m/Y H:i", time() );
echo $date

and this displays the correct GMT time (i.e. 30/04/2008 13:07 when executed at real world time of 14:07 (as the UK is currently GMT+1))

Also when the server came back after the blip users were seeing messages like:

"This forum requires that you wait 30 seconds between searches. Please try again in 663 seconds."

Does anybody have any ideas on how to resolve this?

EDIT : This is effecting both guests and registered users

EDIT : if it helps at all these are my ACP Date and Time Options

Datestamp Display Option - Yesterday / Today
Default Time Zone Offset - (GMT) Western Europe Time, London, Lisbon, Casablanca
Enable Daylight Savings - Yes
Format For Date - d-m-y
Format For Time - H:i
Format For Registration Date - M Y
Format For Birthdays with Year Specified - F j, Y
Format For Birthdays with Year Unspecified - F j
Log Date Format - H:i, jS M Y

EDIT: After reading through a few posts here and on vb.com a common suggestion is the usercp level configuration items, having checked a few accounts (all users are seeing incorrect times) the settings are:

Time Zone: (GMT) Western Europe Time, London, Lisbon, Casablanca
DST Correction Option: Automatically detect DST settings

Which I believe to be correct