It should very well be. But if you wanna make sure; make a test install on your server under a subfolder/subdomain or test on localhost.

@saunders @tilqicom actually, 5.4 is the default version of PHP used by the b2evo developers in their stacks.

Thanks! Will upgrade to PHP 5.4
b2evolution is my favorite blogging system, really awesome
Thanks to the developers

Cheers, will

Uuuups; looking to my "analytics", there to "service" I found strange inputs:

.../htsrv/call_plugin.php?plugin_ID=14&method=save_editor_state
.../htsrv/call_plugin.php?plugin_ID=14&method=save_editor_state&params=a%3A3%3A%7Bs%3A2%3A%22on%22%3Bi%3A1%3Bs%3A4%3A%22blog%22%3Bs%3A2%3A%2213%22%3Bs%3A4%3A%22item%22%3Bs%3A3%3A%22242%22%3B%7D
.../htsrv/call_plugin.php?plugin_ID=14&method=save_editor_state&params=a%3A3%3A%7Bs%3A2%3A%22on%22%3Bi%3A1%3Bs%3A4%3A%22blog%22%3Bs%3A2%3A%2213%22%3Bs%3A4%3A%22item%22%3Bi%3A0%3B%7D

I've seen that for the first time, never before u pgrading to PHP 5.4

Any suggestions?

Regards, will