Blog stoped working, xcache related?

[NolFito]

I'm in a managed hosting (not for long don't worry) and they hace switch from eaccelerator to Xcache (without warning if I may add).. The problem is that the blogs have completely stopped working and I think is as a result of that. ./blog.php displays a white page, and sometimes pops up a download window to download blog.php (you can't)
I initially reuploaded all no image files with no success so when I tried to reinstall the blogs i got this error
Fatal error: Direct Instantiation of vB_Database_Alter class prohibited. in /includes/class_dbalter.php on line 109
hence why i think is Xcache related
I don't know what OS my server is on or the Xcache version... but pretty upset :S
Any ideas?

never mind seems to have fixed it self :S

[Icy]

I'm not sure about the problem but I can confirm that I'm using blog with XCache without having any problem.

Edit: Sorry I missed your last line :S