Certain shapes drawn in earlier LO versions (<3.4.4) are greatly distorted in LO 3.5.2 (on windows) and LO 22.214.171.124 (Precise). Vice versa when saved in 3.5.1 correctly the documents are broken in 3.4.4 (Oneric).
In our case our company logo embedded in writer documents is one of the problems. For us this means virtually all old documents are messed up when opened with LO 3.5.2 while newly created document are broken when viewed with LO 3.4.4.
I don't know if many users are affected by this, but for us it certainly is a stopper to migrate to LO 3.5.1 or 3.5.2 and as a result to Precies.
DistroRelease: Ubuntu 11.10
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
Package: libreoffice 1:3.4.4-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
Uname: Linux 3.0.0-17-generic x86_64
UpgradeStatus: Upgraded to oneiric on 2011-10-13 (201 days ago)
UserGroups: adm admin cdrom dialout fax floppy lp lpadmin mysql mythtv plugdev sambashare scanner syslog users video