Well not much to add
LMDE was working reasonably smooth on my computer up to update pack 5 (well there was an issue with the 3.2.0-3 kernel which caused an higher system load,solved by booting on the previous 3.2.0-2 kernel,and some annoyances with Compiz outlined here http://forums.linuxmint.com/viewtopic.php?f=219&t=119179
,but no freezes or crashes ),then a couple of days ago I went for the update pack 6.
It went apparently OK,no warnings or hangs during the update,three packages were removed (calibre,linux-sound-base and usb-imagewriter - actually can't figure out why calibre had to be removed,however I don't think it's the cause of the issue ),all the new packages were installed and there was no indication to reboot,so I just turned the computer off.
Today I try to boot in LMDE,and a warning pops out about a missing login theme I had installed,nothing major so I click OK and go ahead,the system boots and the interface is frozen:I can't type in a terminal,can't move or resize windows,somehow after a while I manage to issue the compiz --replace &
command in a terminal,which usually so far has done the trick when the window manager misbehaves,and nothing changes,I'm forced to switch to a console and restart the system,only to get stuck in the same exact dead end.
If I boot on the old kernel,things still work as before,although I haven't done extensive tests yet to check everything.
The only thing that I can think of,is that the update was done whilst using the previous kernel 3.2.0-2 as noted at the beginning of the post,not the 3.2.0-3 kernel featured in UP5.
Any suggestions/ideas on what may be going on here? Is my LMDE install broken or it's just a window manager issue ?