Since WP 3.1.3 has come out, we’ve released:
- 3.1.4 – security update
- 3.2
- 3.2.1 – security update
- 3.3
- 3.3.1 – security update
- 3.3.2 – security update
On a scale of 1-10, skipping a single security update is about a 3 (bad, but not catastrophic). Skipping 4 security updates, though, would be closer to an 8-9 …
You should seriously consider moving to a new host if they’re locking you on PHP 5.2.3. Even PHP 5.2.4 included several security updates, and the 5.2.X branch maxed out at 5.2.14. The current stable for PHP is 5.4 (thought 5.3.9 is still pretty solid).
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