February's MacBook Pro Keyboard Firmware Update 1.0 may be proving to be more trouble than it's worth. According to MacFixIt, a number of users have written in complaining as to freezing issues that have arisen in the wake of the update.

"I have a MacBook Pro (Penryn) 2.4 GHz which behaved well for the first five days then presented the problem of unpredictable freezes at startup. I've done quadruple PRAM zappings dozens of times. Occasionally, it will start promptly, but 3 out of 4 startups freeze."

The article also adds that freezes are more likely to occur when the laptop is running from battery power and that the problem can manifest itself at startup or after an hour or two of normal operation.

Unfortunately, the recently released MacBook Pro EFI Firmware Update 1.5 doesn't seem to resolve the issue.

Aside from keeping the MacBook Pro persistently connected to power, solutions for this issue are few and far between. Some users have reported turning keyboard backlighting off reduces incidence of the issue. This fix can be accomplished by going to System Preferences, selecting "Keyboard and Mouse," going to the Keyboard tab, then deselecting the option "Illuminate keyboard in low light conditions."

If you've seen this issue on your end or have found a good solution or workaround, let us know in the comments or forums.