Capital Assets do not appear correctly on my Balance Sheet

My capital assets do not seem to appear correctly and cause my Balance Sheet and Trial Balance to not balance.

I have added a laptop purchase from 2007 via the Add a Manual Asset Purchase option. My opening balances are from 1st Feb 2009. The asset depreciation looks like this:
12 Nov 07 Purchase of Capital Asset £299.00
12 Nov 07 Depreciation of 33.33% £99.66
12 Nov 08 Depreciation of 33.33% £99.66
12 Nov 09 Depreciation of 33.34% £99.68
Net Book Value £0.00
Total Assets Value as at 31 Jan 10: £0.00

My balance sheet for Opening Balances, is out by £98.64 as the Capital Assets figure shows zero.

My balance sheet as at now, or as at y/e 31/01/10, is out by £98.85 as it shows a Capital Asset figure of zero AND a depreciation value of £100, giving a net book value of £-100!
Capital Assets 0
less Accumulated Depreciation 100
Net Book Value £-100

I have tried altering the Capital Assets figure in the Opening Balances section within Settings, but this has no effect and is never picked up by the balance sheet.

Help please!