HP Pavilion ze4547wm (ze4500 series) laptop with Radeon IGP 340M video card.
Reason for update:
Frequent Firefox crashes with embedded flash content even though system was up to date with patches, and Adobe (ex Macromedia) Flash plugin was latest version. Decided this must be a lib conflict.
Followed the instructions on found in Slack12.0 DVD/upgrade.txt. Uneventful except I was not upgrading from Slack 11.0 as instructions...