[split] Excessive Memory Usage

[masterj]

Hi again i tried a fresh install , no mods or theme installed .. just the default BB

Generated in 0.0216899 seconds (91.31% PHP / 8.69% MySQL)
SQL Queries: 10 / Global Parsing Time: 0.0158298 / Memory Usage: 4 MB
PHP version: 5.2.16 / Server Load: 0.91 / GZip Compression: Disabled


and this is my original board

Generated in 0.0935700 seconds (92.61% PHP / 7.39% MySQL)
SQL Queries: 9 / Global Parsing Time: 0.0372572 / Memory Usage: 8.75 MB
PHP version: 5.2.16 / Server Load: 0.89 / GZip Compression: Enabled


Ok now i've imported a backup database

look:

Generated in 0.0462229 seconds (86.10% PHP / 13.90% MySQL)
SQL Queries: 9 / Global Parsing Time: 0.0225270 / Memory Usage: 5.75 MB
PHP version: 5.2.16 / Server Load: 3.66 / GZip Compression: Disabled


note there are no plugins activated yet , im sure if i'll use the same plugin i'll get 8.75 too


so what's your critique ? Is it a server issue ?