Albion's run of five straight League victories came to a frustrating halt against stubborn Scunthorpe.
The Seagulls had to settle for stretching their unbeaten sequence to nine matches in an untidy contest at a soggy Withdean.
Scunthorpe came closest to breaking the deadlock, the lively Lee Hodges hitting the bar.
Although Albion will be disappointed with the result, they have the consolation of a sixth clean sheet in succession.
It is now an amazing 9hrs and 16mins since Micky Adams' side conceded a goal.
The kick-off had to be put back 15 minutes, with a road accident close to the ground delaying the arrival of many fans in another near capacity crowd of 6,567.
Gary Hart had Albion's best effort of the first half.
He beat the visitors impressive young captain Nathan Stanton with a clever piece of skill before his shot was blocked by keeper Tom Evans.
Scunthorpe's persistent time-wasting tactics, adopted almost from the outset, incurred the wrath of supporters.
Struggled They responded with chants of "boring, boring Scunthorpe" after the break as the Seagulls struggled to reproduce their recent fluency.
Hodges struck the bar for the visitors with a left foot shot ten minutes into the second half.
But their lack of ambition did not deserve a winning reward.
Adams brought on substitutes Lee Steele, Paul Brooker and Steve Melton in the last half hour in a vain attempt to end the stalemate.
The Seagulls have a chance to put things right when Hartlepool visit Withdean on Wednesday night.
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