I received notice of this via e-mail this afternoon. If you have a Dell server, you'll want to pay attention to this one. The applicability is as follows per the site:
his patch fixes a timing issue in the LSI Logic MegaRAID driver shipped with ESX 2.5.x. This issue causes ESX Server systems using LSI Logic MegaRAID controllers to become unresponsive when storage management agents are installed on the service console.
VMware has seen this problem on Dell non-blade systems when storage management agents are installed on the service console. However, the issue may also be triggered by other applications that communicate directly with internal MegaRAID firmware. See knowledge base article 2025 for more information.
I'll be looking at my Dell 2850's next week. Things have been running well for last few months so I'll be examining this one closely.